Hmm... where to start...
Video Games - The only ones I've downloaded were old games. I don't waste my time downloading newer games, though if there's a new game I want, I'll go out and buy it.
Movies - I don't know a good excuse for this one. I usually end up buying the movie if I liked it, or if I'm really interested in it (but haven't seen it). Movies that I have some sort of interest in, I usually end up downloading. However, most of the movies I have on my hard drive aren't that great. I mean, the last movie I downloaded was Dragon Ball: The Magic Begins.
Applications - Most of the applications I've downloaded illegally usually have to do with creating something. Whether it's pictures, music, models, etcetera. The only excuse is that I'm always looking to try my hand at something and see how far I can go with it, maybe even become proficient at it. What can I say? I'm the kind of person who wants to do everything; make music, movies, pictures, models, maps, etcetera.
Music -The only music I download these days are anime and video game soundtracks. However, I do have a lot of regular songs.
Books - The only books I've downloaded were related to Martial Arts, fitness, anything along those lines. The Martial Arts books I downloaded turned out to be complete bullshido, the fitness books turned out to be completely useless and outdated and the rest just sucked. However, since I discovered Amazon, I've been buying books pretty occasionally.
Anime - I'm not a big anime fanatic, so I usually don't go on a downloading spree for anime. The only anime I download now is Naruto Shippuden and Bleach. I do have a few anime shows and movies on my hard drive.
Manga - I'm not a big manga fanatic either. The only manga I download and have is Vagabond.
I know it sounds like I'm trying to make myself sound innocent by "downloading older games" or movies "that aren't that good", but I'm not. Warez is warez, thus illegal, regardless if it sucks or not.