I've never found him funny. The few times I've seen Seinfeld I hated his character.

A long time ago I heard that he was eating lunch and someone had looked at him and he SNAPPED and basically ripped the person a new butthole because the person just looked at him.

Paranoid and anger management issues.

Sorry to all the Kramer lovers, but no way.

And this instance, I think he just commited career suicide.

No matter what the hecklers were saying he should have been good enough to maintain his composure and give a few good snappy comebacks like I've seen other GOOD comedians do.