I picked up "Hunger Games" for my wife as she was looking for something new to read following Twilight and all of that. She ended up buzzing through the trilogy in a couple of weeks, and loved it. I've since started reading (finished book one, and just started the second on "Catching Fire"), and have to say it is pretty good. I understand why everyone compares it to Twilight, but they aren't really anything alike to me. I don't even see why this is necessarily a "teen" book, aside from some of the characters being teenagers. It is a pretty dark story (at least so far, with no signs of changing), and pretty cool overall. Early indications are that the movie could be pretty big at the box office this year too, I know I'm looking forward to seeing it.
As far as this year's Top 5, it is hard to predict what will be first...but in no particular order I'd go with relatively the same movies:
The Dark Knight Rises
The Amazing Spider-Man
The Hobbit: An Unexpected Journey
Twilight: Breaking Dawn Pt. 2
There are some dark horses (like Hunger Games, MIB 3, GI Joe, Brave, etc.), and some that are harder to predict (Spidey), but overall it should probably shake out like that. From what I've read, it sounds like John Carter (budget of $250) is heading towards a pretty bad opening weekend, finishing #2 for the weekend with around $30.