Return of the Jedi: © & TM Lucas Film. LTD

3. GEORGE COSTANZA
Sidekick to: Jerry Seinfeld
Loyal. Dependable. Generous. These words describe the finest sidekicks. They do not describe George Costanza. Jerry's pal was known to lie, cheat, and steal (not really, but he once smuggled a book into a restroom). So what was it that kept him on Jerry's speed dial? The comic's understanding that his own complicated, annoyance-ridden existence was that much better when compared with his short, bald buddy's. That's better than nothing.