It does what it says on the tin, a testerone packed 1hr and abit. Where it fails is it tries to justify the events in the film with a limp and melow dramatic reference to Achilles shield. If your willing to overlook that, which you probably are if you are even remotely intrested in the film. Go see it you wont end up being bored at all.
Verdict
3 Stars
Go See, its not the best film you’ll ever see but it is enjoyable non the less.
Links
IMDB

Overall I really enjoyed 21, I can’t comment on the book as I haven’t started it but I have bought it. I thought all the characters where believable, and it was an entertaining film, and has found its way on to my favorite films list.