93. Dr. Ben
Best-known episode: "The Abstinence"
Elaine's doctor boyfriend isn't really a doctor — he finished med school, but he keeps flunking the licensing exam. And when there's an actual medical emergency at the coffee shop, Ben has no idea what to do. By the time he played Ben, Bob Odenkirk was already a comedy cult hero on Mr. Show. He went on to play Saul on Breaking Bad — alongside fellow Seinfeld alumni Anna Gunn (Jerry's girlfriend in "The Glasses") and "dentist to the stars" Bryan Cranston. ROB SHEFFIELD