Hunger Games was a good book. Catching Fire was...alright. I couldn't stand the last one and kept rooting for the author to reward me with the particularly violent death Katniss was begging for.
That's pretty much my wife's evaluation of the series as well. She liked the first one and the next two got increasingly worse.
The plot really turned me off too when I heard about it. It sounds disgusting. I haven't seen this, but might since it's so popular.