Crumbs: Reviews » Comedies » The Big Bang Theory » Season 4
Critical reviews of U.S. TV shows
and analysis of what makes them
good, bad, irritating and enlightening.
55
/100
Viewer
62
/100

The Big Bang Theory

The Big Bang Theory is a comedy about two physicists Leonard Hofstadter and Sheldon Cooper who live and work together in Pasadena, California. They live a comfortable geeky existence until attractive wannabe actress Penny moves in across the hall. CBS 2007-???

56
/100
Viewer
81
/100

Season 4

# Episode Overview Score Viewer score Podcast
1 The Robotic Manipulation Sheldon is considering have a child with his frien...
Sheldon is considering have a child with his friend Amy. Penny suggests that they go on a date so he can get to know the future mother of his child. Meanwhile Wollowitz finds an unsavoury use for a robotic arm he is developing.
62 -
2 The Cruciferous Vegetable Amplification Sheldon fears he may not survive long enough to tr...
Sheldon fears he may not survive long enough to transfer his consciousness into a robot and live forever. He attempts to diet but then realises that an accident is the likeliest cause of his demise. So he creates a virtual presence device and stays put in his bedroom. The device travels with Leonard to work and dinner.
56 -
3 The Zazzy Substitution Amy's presence irritates Leonard and the guys so t...
Amy's presence irritates Leonard and the guys so they are relieved when she and Sheldon break up. But Sheldon then gets himself many cats and won't admit he misses her. So Leonard calls in his mother and she sees to it that he starts seeing Amy again.
63 -
4 The Hot Troll Deviation Howard wants Bernadette back but she is still upse...
Howard wants Bernadette back but she is still upset with him for cheating on her in World of Warcraft. Raj is chafing under Sheldon's yoke at work and so decides to take action.
52 -
5 The Desperation Emanation Leonard is feeling lonely and everyone can sense i...
Leonard is feeling lonely and everyone can sense it. In desperation he asks Howard to get Bernadette to fix him up. Meanwhile Amy asks Sheldon to meet her mother and he tries to hide from her, incorrectly assuming that she wants to take the relationship to the next level.
47 100
6 The Irish Pub Formulation Raj's sister Priya is in town for the weekend and ...
Raj's sister Priya is in town for the weekend and Raj reminds his friends to keep their hands off her. We soon learn that she and Leonard hooked up once before and intend to do so again. Leonard has to keep her a secret from Sheldon though and of course fails. Soon the betrayal spreads around the group and retaliatory revelations take place.
52 -
7 The Apology Insufficiency Howard is asked to join a team working on Defence ...
Howard is asked to join a team working on Defence Department satellites. The FBI are required to do a background check and come to interview Howard's friends. Sheldon accidentally tells Agent Page (Eliza Dushku) about the Mars Rover incident (208) and his clearance is not granted. He unexpectedly feels guilty about this and tries to make things right.
54 -
8 The 21-Second Excitation The boys are off to a special screening of Indiana...
The boys are off to a special screening of Indiana Jones and the Raiders of the Lost Ark. Sheldon thinks they should be in the queue far earlier than they are and is proven right when Will Wheaton pinches the last four places for his friends. Meanwhile Penny and Bernadette are having a girls night and Amy invites herself along.
49 100
9 The Boyfriend Complexity Penny's father comes to visit. He was so happy tha...
Penny's father comes to visit. He was so happy that Penny had found a respectable boyfriend that she told him she was back with Leonard. He plays along with the charade with much glee. Meanwhile Howard, Bernadette and Raj all drink together while Raj is monitoring a telescope.
53 85
10 The Alien Parasite Hypothesis Amy is aroused by Penny's ex Zach and can't diagno...
Amy is aroused by Penny's ex Zach and can't diagnose her symptoms. Sheldon helps her realise that it is sexual arousal and seeks out Zach to arrange a meeting. Meanwhile Raj and Howard argue over who would be the sidekick were they to gain super powers.
54 45
11 The Justice League Recombination Penny is back with Zach and the guys mock his lack...
Penny is back with Zach and the guys mock his lack of intellect. They apologise for being mean and he accompanies them to the comic book store. Sheldon spots the chance to use Zach as Superman in their Justice League of America ensemble on New Years Eve. Zach agrees and Penny is upset as it means she will have to go with them as Wonder Woman. What is really upsetting her is that she is only with Zach to avoid being alone and misses Leonard.
49 -
12 The Bus Pants Utilization Leonard has an idea for an App that can help solve...
Leonard has an idea for an App that can help solve equations. Sheldon of course tries to take over the project and so Leonard fires him. He sulks and Penny tries to mend fences and get him back on the project.
45 -
13 The Love Car Displacement The gang head to a Science Conference. Penny comes...
The gang head to a Science Conference. Penny comes along because of the spa facilities and soon regrets it when Sheldon kicks her out of the car and she is forced to share a bed with Amy. Bernadette and Howard argue after he sees her very large ex-boyfriend.
53 -
14 The Thespian Catalyst Bernadette tells Raj that he is cute and he begins...
Bernadette tells Raj that he is cute and he begins fantasising about her. Sheldon gives a lecture which is universally panned. Amy suggests he take acting lessons to enhance his ability to communicate.
54 -
15 The Benefactor Factor University President Siebert demands the presence ...
University President Siebert demands the presence of the gang at a University Fundraising party. Sheldon initially refuses to go which leaves Leonard, Howard and Raj to be intimidated by wealthy donor Mrs Latham. She takes a shine to Leonard and asks him out to dinner. There she kisses him and Sheldon encourages him to exploit her lust for a generous contribution.
57 -
16 The Cohabitation Formulation Raj's sister Priya returns to the US and though Ra...
Raj's sister Priya returns to the US and though Raj forbids it she begins dating Leonard. Amy assumed Penny will be upset which initially she isn't. Meanwhile Bernadette asks Howard to chose between her and his mother. He finds it tough but does move in with Bernadette. He then begins to treat her like his mother until they argue and he moves out.
58 -
17 The Toast Derivation Leonard starts hanging out at Raj's apartment to s...
Leonard starts hanging out at Raj's apartment to spend time with Priya. Sheldon resents having to leave his home and so invites Kripke, Stuart and Zach round to hang out. Meanwhile Amy and Bernadette try to comfort Penny over the "loss" of Leonard.
61 -
18 The Prestidigitation Approximation Priya and Leonard are growing closer and she takes...
Priya and Leonard are growing closer and she takes him shopping and encourages him to try contact lenses. She also asks if he will stop hanging out with Penny. He ducks the issue and is embarrassed when Priya finds out the truth. Meanwhile Howard shows off an amazing card trick and Sheldon can't figure out how it works.
58 -
19 The Zarnecki Incursion Sheldon's World of Warcraft account is hacked and ...
Sheldon's World of Warcraft account is hacked and all his possessions are stolen. He is furious and asks the gang to help him track them down. Leonard is keen to help and first ignores and then lies to Priya. The gang finds the culprit and drive out to his house to demand Sheldon's stuff back. But Todd Zarnecki won't give them their stuff back and their car breaks down on the way home. Meanwhile Penny is getting frustrated by Priya's presence and it is she who they call to come pick them up.
67 -
20 The Herb Garden Germination Amy tells Sheldon that she hears Bernadette is thi...
Amy tells Sheldon that she hears Bernadette is thinking of breaking up with Howard. Sheldon tells Leonard who tells Priya who tells Raj and so on. Sheldon and Amy become fascinated by how quickly the news has spread. They decide to start an experiment by floating the rumour that they slept together. As that gossip races around the group we learn that Howard plans on proposing to Bernadette and Raj has feelings for her.
69 -
21 The Agreement Dissection Sheldon is furious that Leonard and Priya were sha...
Sheldon is furious that Leonard and Priya were sharing the shower when he needed to pee. He brings them the roommate agreement to complain but Priya dismisses his claims. The guys then eat Greek food on Pizza night to further enrage Sheldon. He joins Penny, Bernadette and Amy on a girls night to get away. Amy gets very drunk and kisses him. He ignores that but takes her advice on how to deal with Priya. The next day he threatens to tell Priya's parents about her new relationship unless Leonard signs a new and improved roommate agreement.
66 75
22 The Wildebeest Implementation Priya and Leonard ask Howard and Bernadette to joi...
Priya and Leonard ask Howard and Bernadette to join them for dinner. Amy wants to use Bernadette as a spy to learn more about Priya. Amy texts Bernadette and tells her to claim that Penny is going to be in a film with Angelina Jolie and is dating an astronaut. Bernadette becomes increasingly uncomfortable having to defend this fabrication. Meanwhile Raj is feeling lonely and seeks out Sheldon's companionship. Sheldon is trying to perfect three person chess and encourages Raj to take some new pills which might help his social anxiety.
56 -
23 The Engagement Reaction Bernadette goes out to lunch with Howard's mother ...
Bernadette goes out to lunch with Howard's mother to get to know one another. Howard then tells his mother that they are engaged and she has a heart attack. The gang assemble at the hospital but Sheldon doesn't want to be there for fear of catching deadly germs. Priya and Penny compare notes on Leonard while Raj teases him.
53 -
24 The Roommate Transmogrification Tired of listening to his sister and Leonard havin...
Tired of listening to his sister and Leonard having sex, Raj moves into Leonard's room. Sheldon begins to enjoy the new arrangements and Penny joins them for dinner and wine. Bernadette is awarded her PhD and a new high paid job which leaves Howard feeling inadequate. Leonard learns that Priya is heading home to India and returns to his apartment upset. The gang are shocked when Penny emerges from Raj's bedroom having spent the night.
54 -