96. Tony the Mechanic
Best-known episode: "The Bottle Deposit"
Most of Seinfeld's quirky characters were harmless oddballs — but others, like Crazy Joe Davola, crossed the line from offbeat to disturbing. The same year he debuted as Ray Romano's goofy brother in Everybody Loves Raymond, Brad Garrett appeared in this two-parter as the creepily obsessed grease monkey Tony, who seems competent until he accuses Jerry of automotive abuse ("You barely know the car...when was the last time you even checked the washer fluid?"). Finally, he kidnaps Jerry's car, complete with JFK's golf clubs in the trunk — that final dark-side-of-the-loon touch. DAVID BROWNE