With his multiple arrests and failed attempts at rehab, it's obvious that Charlie Sheen has been a bad boy this year. But that infamous night at the Plaza Hotel in October pretty much sealed the deal. The Two and a Half Men star allegedly hired a hooker, took his pants off in a restaurant bathroom, trashed his hotel room and ended up in the hospital. Of course, Sheen chalks the incident up to just "one bad night." We'd hate to catch him on a really bad night!