In the new book "Kick-Ass: Creating the Comic, Making the Movie," Mark Millar himself, the creator of the comic book and coproducer of the movie, says his favorite moments in the film are "probably the Hit-Girl moments" (that's her in action, left). Without giving too much away, as Millar says, "She's just killed a man, and swears, and she's tiny! I think the impact of that is amazing. Then before you can catch your breath you see her wiping everyone out. It's startling to watch."