The Kara-te Kid - S4.E16

Inspired by the "Karate Kid" films, Adam and the other Adam Goldberg face off in a karate match to settle once and for all a long-running feud. Barry and Adam go to Uncle Marvin for training, but the only thing they learn is how to clean an apartment. Meanwhile, when Erica and Geoff's relationship becomes public, they realize that they aren't the good guys.