I finally saw this tonight, and thoroughly enjoyed it. As far as the "Hollywood" aspects, it was a full on wish-fullfilment movie, so I had no problem with either him getting the girl, or the jetpack. I also got a kick out of a couple of little things - a friend provided much of the set-dressing for the comic store, so it was cool spotting details (the giant spiderman statue is sitting in our office at the moment). I also spotted for a split second, while Kick-Ass was checking his MySpace, he had an email from Tom Muller, designer extraordinaire and sometimes of this parish. Love to hear how that happened!
You know what is kinda weird? I just found out that the comic book and movie script for Kick-Ass were written at the same time, intended to be different on purpose. It kinda blows my mind, but I guess it's a no-brainer at this point since comic movies are dominating Hollywood these days. Now it makes me think, does this happen a lot, or is it just a recent development? Anyone?
From what I gather Scott Pilgrim got a similar treatment, the buzz around the first book attracted studio attention so both developed at the same time. Mark Millar was already buzzed up by Wanted, so it makes perfect sense that the studio would be whatever concept he was willing to sell.