by Lindsey Unterberger

Celebrity arrests make for the best headlines. Paris Hilton's jail sentence made front-page news just about everywhere. And even non-gossip junkies know about Robert Downey Jr.'s drug possession charges. Plus, who could forget Mel Gibson's Driving Under the Influence offense in which he made derogatory remarks to a police officer. Other star crimes are more obscure. For example, did you know Vince Vaughn was once involved in a knife fight or that Daniel Baldwin was charged with grand theft auto? Test your legal knowledge by matching these celebs' mug shots to the crime with which they were charged. Remember: Many of the charges against these stars were dropped.