ugh. isn't it obvious? Books or novels are always better than the movies. Probably because the movie cannot really contain everything that was written in the book unless you want it to be 3-day-movie. IF YOU GET WHAT I MEAN mrgreen
Books are always better than movies, rarely is it the other way around.
I do think that they could have added some backstory prior to Katiniss' entrance on the arena, her family and everyday life.
The movie in itself isn't too bad, though everything seemed watered down.