The actor, who played Cosmo Kramer on 'Seinfeld,' disappeared after a wild rant towards hecklers upended his career. Now, 17 years later, he's opening up about facing his demons in a new memoir On ...

At their trial, the four would have to face multiple character witnesses ... George, Elaine, and Kramer at the end of "Seinfeld," as they frequently ran into cosmic punishments and discomfort ...

and Michael Richards (Kramer) wished Calder a happy birthday. Richards even reached out with a personal phone call. "I'm so thrilled and happy to hear how much you've enjoyed 'Seinfeld' along with ...