Penny is horrified when Amy gives her a gift: a huge, quite horrible painting of the two of them. With no good way to avoid displaying it, she only hangs…

Leonard must face his fears after being contacted by his high school tormentor.

When Bernadette receives her PhD, Wolowitz feels emasculated. Raj and Leonard swap places and Penny does something she’s regrets.

Bernadette runs into her ex-boyfriend while attending a science event with Wolowitz.

A fight between Leonard and Penny threatens their relationship, while Sheldon battles Wil Wheaton in bowling.

When Leonard and Penny aren’t speaking, Sheldon goes to extremes to keep them both happy.