These overrated actors aren't necessarily bad, but certainly aren't as good as they seem to get credit for! They either have limited range, rely way too much on their good looks or have some other crutch that for some reason has inexplicably made us all think they are amazing actors when they really aren't!
Take Seth Rogan. He literally made a career out of playing a series of roles where he is a goofy stoner. Over and over. It was cute and funny at first, but he really isn't that great of an actor.