52. Beth Luchner
Best-known episode: "The Yada Yada"
Before the world had a chance to fall in love with Debra Messing in Will and Grace, we all got to see her on Seinfeld bonding with Jerry over their mutual hatred for dentists. Beth first appears in "The Wait Out," as Elaine and Jerry scheme to move in on both halves of a couple with a rocky marriage. Then in "The Yada Yada," Jerry finally gets his shot — after Elaine ruins Beth's second marriage. But it's a brief romance; after sharing her anti-dentite sentiments, Beth adds, "Not to mention the blacks and Jews." ROB SHEFFIELD