2. Tiffani Thiessen-(Kelly Kapowski) Talk about good girl gone bad! Tiffani broke out of her good girl image when she played Valerie Malone on “Beverly Hills 90210″. Continuing her adult success, Thiessen can next be seen on the HBO series, “Hung”. 4. Elizabeth Berkley-(Jessie Spano) Emerging from the infamy of “Showgirls”, Berkley has continued acting with small roles in film and TV. After a recurring role on “CSI: Miami”, Berkley will be a part of “S. Darko”, an off-shoot of the cult film “Donnie Darko”.