The Hunger Games trilogy, honestly. Given that these were the first books Collins wrote after coming years of TV writing, the books just feel like very in-depth film scripts to me, only with less likeable characters and extra violence that feels like filler than anything. Plus, the concept of a battle-royale-esque game show is much more enjoyable when it can be seen (as most game shows are) rather than told. I also like the perspective the movie gives to what President Snow is like. I prefer when he is given his own scenes where the dichotomy of his calm demeanor and dictator-like acts of genocide is more fully fleshed out. Hearing about his ideology behind the games and the world itself is also very important to me. A villain feels more believable when you hear their side, and we hardly hear his in the books.