I saw Catching Fire (2013) and Battle Royale (2000) a little while ago.
Catching Fire was better than I was expecting, certainly more memorable than the first Hunger Games movie. I honestly don't remember the first one at all. I remember the book, I liked it, but I don't remember a thing about the movie. So this one was better by virtue of me remembering it, and also I think it had a slightly less epileptic cameraman. The love triangle thing is still bullshit, but what can you do, eh?
Battle Royale was.. pretty much exactly what I expected. It was... brutal and disturbing and it pulled no punches. I hesitate to say I liked it because.. well, the nature of it, but it was a very well made and very effective film. That said, I have to note that it had some attributes that reminded me of older movies, the loud, bombastic music at the beginning and some of the editing seemed to do things I don't usually see in movies made after the 60s or so. It reminded me of an old wartime propaganda film, and I'm not sure if that was intentional or not, because I haven't seen enough Japanese movies to know if that sort of thing is still common practice or not.