First, really love this film. It's rare that I can sit and watch a film and then when asked the question, how it could be improved, be left with no response. The balance of humour and action in the film, I think, is perfect.The characters of the heroes are fantastic and they played off each other really well, and the conflict between them in the early part of film leads to some really humourous scenes, which still set me laughing even now when I think of them.
If I absolutely had to make a criticism of the film, it would be that the personalities of the bad guys/ antagonists feel extremely weak in comparison to the heroes. They really do act and feel just like your average comic book villains. It would have been nice if the richness of the characters of the protagonists could have been mirrored a bit with the villains, but it in no way ruined the film for me.
The overall story and plot is good, and strong enough to hold together the various humour and action scenes throughout the film. Yes, it is a little predicable but again, I don't think that really matters given the subject matter and the genre. There were enough surprises to more than keep my interest, mainly the thought of what wacky and crazy thing the team would get up to next. I particularly like the bit with the battery and the artificial leg.
Anyway, I really enjoyed this film and it has become one of my favourites. I will certainly be getting it when it comes out in store, a while away yet, I know. If you enjoy the Marvel universe then this film is a must and even if you don't, I would suggest you give it try anyway. It's one of those rare films where everything seems to have come together in just the right order and quantities, which has created something really special. I look forward to seeing if this will be matched in the sequel.