I actually haven't watched the Hunger Games but I honestly can't complain about characters being too good looking on screen. At least if the movie is a "flop" to you for any reasons, you'd still have gotten some eye candy out of it.
But of course comparisons are inevitable. In many cases, I'd have already read the books first before the movies (Jack Reacher, Death Note, etc), and I did find myself being slightly more critical of the movies in such cases. On the other hand, I have gotten interested in picking up the books after watching the movie (Harry Potter) and it was fun figuring out which parts of the movie were changed from the books.
Now I just wish I can get my hands on the Dresden files and Dexter tv series.