| Description | Season |
|---|
| Sheldon insists, the gang decides to travel to San Francisco on the Coast Starlight train.? | |
| Penny takes in a chair off the street, Sheldon demands that she remove it from the building.? | |
| Leonard agrees to try and retrieve Penny's TV from her ex-boyfriend, Kurt.? | |
| Sheldon is sick, and Leonard and the guys sneak out to a 'Planet of the Apes' marathon to get out of taking care of him.? | |
| Howard accidently gets the Mars rover stuck in a ditch while trying to impress Stephanie Barnett.? | |
| Penny remarks that Leonard is nuts for living with Sheldon, he tells Penny the story of how he first met him seven years ago.? | |
| Sheldon concocts an elaborate story to help Leonard keep the secret of him spending the night with Raj's sister.? | |
| Penny gets upset when she finds out Leonard and the guys plan to work at the North Pole for the summer.? | |
| Sheldon must overcome his fear of birds while Leonard and Penny attempt to hang out together strictly as friends.? | |
| Sheldon is forced to resort to Einstein-inspired measures to unclutter his mind and solve the problem. (Bazinga!)? | |
| Sheldon insists, the gang decides to travel to San Francisco on the Coast Starlight train.? | |
| Penny takes in a chair off the street, Sheldon demands that she remove it from the building.? | |
| Leonard agrees to try and retrieve Penny's TV from her ex-boyfriend, Kurt.? | |
| Sheldon is sick, and Leonard and the guys sneak out to a 'Planet of the Apes' marathon to get out of taking care of him.? | |
| Howard accidently gets the Mars rover stuck in a ditch while trying to impress Stephanie Barnett.? | |
| Penny remarks that Leonard is nuts for living with Sheldon, he tells Penny the story of how he first met him seven years ago.? | |
| Sheldon concocts an elaborate story to help Leonard keep the secret of him spending the night with Raj's sister.? | |
| Penny gets upset when she finds out Leonard and the guys plan to work at the North Pole for the summer.? | |
| Sheldon must overcome his fear of birds while Leonard and Penny attempt to hang out together strictly as friends.? | |
| Sheldon is forced to resort to Einstein-inspired measures to unclutter his mind and solve the problem. (Bazinga!)? | |
