1. The Electric Can Opener Fluctuation
Aired: Sep 21, 2009 After returning from the North Pole, a conflict among the guys sends Sheldon ...
2. The Jiminy Conjecture
Aired: Sep 28, 2009 Leonard and Penny's first night together goes awkwardly. Sheldon and Howard w...
3. The Gothowitz Deviation
Aired: Oct 5, 2009 Sheldon attempts to covertly alter Penny's habits, while Howard and Raj try t...
4. The Pirate Solution
Aired: Oct 12, 2009 When Raj has to find a new job or be sent back to India, Sheldon's solution l...
5. The Creepy Candy Coating Corollary
Aired: Oct 19, 2009 Leonard is forced to ask Penny to set Howard up with one of her friends, whil...
6. The Cornhusker Vortex
Aired: Nov 2, 2009 Leonard tries to learn about football to fit in with Penny's friends. Meanwhi...
7. The Guitarist Amplification
Aired: Nov 9, 2009 Sheldon is caught in the middle when Leonard and Penny argue about Penny's fr...
8. The Adhesive Duck Deficiency
Aired: Nov 16, 2009 Penny is forced to turn to Sheldon for help when she dislocates her shoulder ...
9. The Vengeance Formulation
Aired: Nov 23, 2009 Sheldon plans revenge after Kripke humiliates him on the radio. Howard develo...
10. The Gorilla Experiment
Aired: Dec 7, 2009 Sheldon attempts to help Penny understand physics to impress Leonard, while H...
11. The Maternal Congruence
Aired: Dec 14, 2009 Leonard's mother makes a visit to his dismay and Sheldon's delight.
12. The Psychic Vortex
Aired: Jan 11, 2010 Raj talks Sheldon into being his wingman at a university mixer. Leonard has t...
13. The Bozeman Reaction
Aired: Jan 18, 2010 When their apartment is robbed, Leonard and Sheldon turn to Howard and Raj to...
14. The Einstein Approximation
Aired: Feb 1, 2010 Sheldon wreaks havoc when he is stumped by a difficult physics question.
15. The Large Hadron Collision
Aired: Feb 8, 2010 When Leonard is offered a trip to Switzerland on Valentine's Day to visit the...
16. The Excelsior Acquisition
Aired: Mar 1, 2010 Sheldon misses an opportunity to get Stan Lee's autograph because he has to m...
17. The Precious Fragmentation
Aired: Mar 8, 2010 The guys' friendship is threatened when they find a ring from the "Lord of th...
18. The Pants Alternative
Aired: Mar 22, 2010 Sheldon seeks help from the rest of the gang in overcoming his fear of public...
19. The Wheaton Recurrence
Aired: Apr 12, 2010 Sheldon takes on Wil Wheaton in a game of bowling. Leonard and Penny's relati...
20. The Spaghetti Catalyst
Aired: May 3, 2010 Sheldon is forced to go behind Leonard's back to spend time with Penny follow...
21. The Plimpton Stimulation
Aired: May 10, 2010 Chaos ensues when a nymphomaniac physicist visiting Sheldon hooks up with Leo...
22. The Staircase Implementation
Aired: May 17, 2010 Leonard tells Penny about how he and Sheldon became roommates and what happen...
23. The Lunar Excitation
Aired: May 24, 2010 Penny has a night of angry, drunken sex with Leonard, much to his confusion. ...