I would have to say Tom Hanks. jk I really think the worst actor/actress ever award would have to go to Mark Wahlberg in The Happening It may just be that the entire script was made by a guy who barely understands english, but that movie was just stupid.
say what you want about high school musical but zach efron is an amazingly talented broadway performer. that dude can sing and u know it lol. he may have been in the worst movie all time but that doesnt mean hes the worst actor. u got to give the dude respect he has never done anything wrong either.
but anyways. i love the guy but..... eddie murphy is a terrible actor but hes still funny as hell