73. Marla Penny
Best-known episode: "The Contest"
Professional closet organizer Marla Penny (Frasier's Jane Leeves) never met the right guy, and by the time her path crosses with Jerry Seinfeld's, it's revealed that she is still a virgin. When she's introduced in the series, she's sweet and naïve – that is until she has a chat with Elaine, who opens a Pandora's Box of horrors about men. Luckily for her, Mr. Right – John F. Kennedy Jr., whom Elaine was pursuing – shows up just after she's shuffled off the Seinfeld gang after learning about their "contest." She revisited that turn of events by offering it up as damning testimony in the series finale. KORY GROW