I've seen Clue! I love the Butler-guy so much! (Though pardon me for not knowing the actor's name, yes I know I'm horrid.)
His energy through the entire movie is absolutely amazing. And the entire cast too. It's a pretty great movie. I was going on a mystery-thriller spree once. I saw others like Exam, Cube, Fermat's Room, Nine Dead, Identity, Phone Booth, Clue, among other things. There were a lot more titles on that list but I don't seem to remember them. It's when I fell in love with the mystery genre.