We never see Kristen Bell on Gossip Girl—which is a shame because she's adorable and would look great in some of those outrageously fabulous GG fashions—but her voice makes a resounding impact even without the visuals. It's bitchy, knowing, insidery, and oh-so mischievous. Snarl! Bell had plenty of TV experience before signing on to Gossip Girl, including a part on Heroes, and the starring role in Veronica Mars. Fun fact: Bell reportedly eats dessert after every meal.