Bill Murray was on 'Late Show With David Letterman' (weeknights, 11:35PM ET on CBS) tonight, and he had his leg in a sling and his foot up on Dave's desk.

That would be interesting enough, but even wackier was his sparkly purple top, striped shorts, and Russian snow hat. He told some story about 'Ghostbusters,' but frankly, we can't even remember what it was.

Watch the video after the jump.Bill Murray was on 'Late Show With David Letterman' (weeknights, 11:35PM ET on CBS) tonight, and he had his leg in a sling and his foot up on Dave's desk. That would be interesting enough, but even wackier was his sparkly purple top, striped shorts, and Russian snow hat. He told some story about 'Ghostbusters,' but frankly, we can't even remember what it was.