Emma Caulfield played Susan Keats for 30 episodes of "90210" during the sixth season. She would go on to star as the demon Anya in "Buffy the Vampire Slayer" TV series. Now, 39, her other post-"90210" roles include stints on TV series like "General Hospital," "Life Unexpected" and "Gigantic" and bit parts on shows such as "Once Upon a Time," "Royal Pains" and "Husbands."