24

If this truly is the last season of 24, as recent reports indicate, at least the show is going out with a snarl and a bang, courtesy of Michael Madsen.

The actor, who has perfected the role of a bad-ass in movies such as Reservoir Dogs, Thelma & Louise, Kill Bill, will guest star on an episode of the Fox drama this spring.

Madsen has been cast as Jim Ricker, an ex-military character from Jack Bauer’s past. He'll appear near the end of day eight.