Bell starred on Broadway in The Adventures of Tom Sawyer and The Crucible as well as in the Off-Broadway musical and Showtime film version of Reefer Madness. From 2004 through 2007, she played the title role in the TV series Veronica Mars. Her upcoming films include Fanboys and Forgetting Sarah Marshall.
In addition, TVGuide.com recently speculated, in response to a comment made in TheaterMania's article The Reality Thing, that Bell might take over the role of Elle Woods in Legally Blonde next year. However, her management said no such decision had been made.