Meryl Streep and Tom Cruise have already been mentioned. (Tom was actually good in “Born on the Fourth of July”. Meryl was good in “Ironweed”)
John Travolta (except “pulp fiction”)
Sandra Bulloch (except “while you were sleeping”)
Will Ferrell is not funny, except for his performance (it would have been funny done by anyone) in Blades of Glory. That was probably only funny to me, though, because I follow figure skating. I thought Anchorman was one of the worst movies of all time.
I would agree with @cookieman about Jim Carey, if not for the great voice over he did for Ebenezer Scrooge in the animated version of a Christmas Carol, other than that, he’s kind of a bore.
Leonardo DiCaprio, boring and trying way to hard to be cool.
William Hurt. Tries even harder than Leo to be cool and hip, especially with his lazy speech patterns and facial movements.
Dennis Quaid. The goofy smile just bugs the heck out of me.
Ben Stiller, boring, unfunny and trying even harder than William Hurt or Leo to be cool. Shame though, because his parents Jerry Stiller and Ann Meara are top notch.
Jennifer Garner, but I think it’s mostly that 6 inch dimple that makes me think she’s just a light weight. I can’t help but stare at that dimple and overly toothy grin and follow the dialogue or story or take her seriously. I used to think the same thing about Geena Davis, who has a similar dimple and toothy grin until she got a little bit older and played the President of the United States in Commander and Chief. I thought she was excellent. Maybe because in that, she didn’t have the cutsie Katie Couric smile, because it was a serious role.
Eliza Dushku. In all of the roles I’ve seen her in, she always has this smug I’m hot look on her face and poses. She’s actually rather plain and boring. She and Leo could make a movie called “The Most Boring Romance of All Time While we Strike a Pose.” Unfortunately I’ve seen more of her than I normally would have, because she was in 2 movies with Alan Rickman, Bottle Shock and Nobel Son. They should have used Scarlett Johansson.