(The WB, Mon., 9 p.m. ET)

At age 4, Gellar played Valerie Harper's daughter in An Invasion of Privacy. At 14, she was the young Jackie in A Woman Named Jackie. Now, at 20, she's the nation's foremost hemophobic heroine. "I always wanted to play a strong, feminine character who makes mistakes," says Gellar, an only child who grew up in New York City. "Buffy's a real good role model."

THE BUZZ: "One of the really cool shows," says Grubbs.