Scott is always smiling. It looks fake.
Not that that wouldn't make him a good CEO for Apple. But it seems to me he tries to hard to look enthusiastic.
I always have a bad feeling when I see him. Yes, he looks FAKE in every aspect. Creepy, with a sinister aura. Probably butt-kissing his superiors and kicking down on his underlings. So far, he is the only Apple manager that I disliked right from the moment when I first saw him in a public appearance.
But more importantly, he's responsible for iOS and the entire Walled Garden concept around and behind it. I wouldn't trust this guy even if I found him as likeable and cool as Captain Jack Sparrow.
It might be hard to swallow for most of you, but I think that even Steve Ballmer - as a person! - has more going for himself than Scott Forstall. At least Ballmer knows how to make a fool out of himself and he's always good for a laugh.