He's the only cast member I'm really not sure about yet. The only movie I saw him in was MI:III and I didn't even remember him in it until I read somewhere that he was part of the main cast. That's how little of an impact he made on me...
My heart was with Paul McGillion for the role of Scotty and I'm very disappointed that he didn't get it because he would have been perfect for it. Even though he's Canadian, both his parents are Scottish and he does a wonderful Scottish accent.
Anyway... I'm sure there was a good reason for casting Simon Pegg instead of Paul and I really hope that my doubts will be gone the minute I see him as Scotty.
Uhura - "And here I thought you were just some dumb hick who only had sex with farm animals."
Kirk - "Well... not only..."