By Ginia Bellafante

Everybody gets annoyed. Few people can make a lucrative career out of it. Exception: JERRY SEINFELD, comedy's master chronicler of mundane absurdity. What's been driving him nuts this week? High-finance-charge credit cards. "Have you ever seen how many words there are on the bottom of a Visa bill?" says Jerry. "It's unbelievable." Good thing Seinfeld was tapped to plug the American Express card in edgy new adds that knock the competition. One features Jerry lecturing a goldfish on revolving debt. Quirky, yes, but then again, Am Ex had the comic pen the ads himself. "I always wanted to write ad copy," says Jerry. "It's a lot like writing jokes."