I really love the Harry Potter books, I just re-read all of them this fall and they were as magical as I remembered them to be
The movies are good, but being a HP book fan I keep getting annoyed at certain things not making the movies and some of the things they added that weren't in the books.
I'm a fan of the games, tho. I noticed that the games are actually different depending on which system they are on. At least that was true in the beginning - I played through Philosopher's Stone on my PC, on Playstation AND on x-box and the gameplay was incredibly different on all three. The x-box one was my favorite. In fact my favorite HP games are the first three ones on the x-box.
I really love how they are set up with going between classes and storyline quests and then you have the whole school and grounds to explore and look for lost objects, wizard cards, etc. and I really love flying around the grounds, makes the exploration even more fun. The grounds got bigger and more detailed in the third game, plus you got to switch between the characters, and I loved that, plus flying the hippogriffs were a lot of fun (though I did miss getting to fly around on your broom).
With the fourth game they decided to make some changes to the formula and I HATED it. Suddenly you couldn't explore anymore, you couldn't move around the school, and you had NO control over which spells you cast, everything that was fun about the games were gone. Then by the time the fifth game and onwards came out, the school and grounds had gotten so huge you had to rely on the map to tell you where to go. I have yet to really play anything past the first three games, because I just feel they changed too much.
Game 1-3 (the good ol' games):
Game 4 (the game that totally sucked):
Game 5 (how the newer games are like):
I just prefer the old games, they were more magical to me and I didn't need footprints to show me where to go all the time...