The Bad Fish Paradigm

Summary
Penny and Leonard return from their date but she gives him a brush off when he tries to get a second date. She confesses to Sheldon that it is because she thinks she isn’t smart enough to keep his interest. The stress of keeping this secret forces Sheldon to move out. But when neither Rajesh or Howard can stand him he returns to Leonard and gives away the secret. Unfortunately Penny is not happy with Leonard’s suggested resolution.

Critics
"This isn’t a bad episode out of context. But as the season opener I think the producers have missed a big trick. I think they have learnt the wrong lessons from season one and I hope they can refocus on the main story soon." - The TV Critic's Review