"Doppelganger" is one of the funniest episodes I've seen so far.
Nothing major really happens here. Sure some lady flirts with Gibbs and he ends up having a heavy make-out sesion with her but other than that, it's just an everyday episode. What really makes this episode is the humour. It's one of the funniest episodes I've ever seen.
The episode title says it all...our NCIS team meet their doppelgangers. McGee's counterpart is especially funny. They even look almost identical. The whole coffee thing rocked. "No, mine's the one with extra foam." and Gibbs and his doppelganger are sitting there just rolling their eyes. Hilarious.
Awesome episode. 10/10