Seth Rogen - I dont think hes ever been funny and I HATE the character he plays in every movie.
Tom Cruise - It always bothered me that he never seems to allow himself to look bad. He has a lot of war/spy movies where hes beaten up and dirty, but his hair and his face still look perfectly done-up like he just left the spa/stylist. Takes me out of the experience. This ones really irrational because I ignore this when it comes to every female action movie star ever.