Movie: Too many. Seriously: Citizen Kane, Reservoir Dogs and Tron to name a few.
Games: Again, there's a lot, but a lot of it is because of my hatred for turnbased combat. Final Fantasy, Terranigma, Lufia and Chronotrigger fot this category.
Books: Catcher in the Rye (forced to read, ty teacher!) and the Hobbit (loved the actual LOTR though) jump to mind.
Music: I absolutely hate Lamb of God. I don't like it, I'm regularly told I don't know music and Metallica hasn't released a good album since 1991. (although I completely agree, I do love King Nothing)
To counter this, I will state stuff everyone hates, but I love:
Movie: I have seen all the Transformers movies by Bay. They weren't great, or even good(enter waving American flag here, with explosions), but they were passable. once.
Games: All Yu-Gi-Oh World Championship games are on my shelf. not sure how many people agree.
Books: Go. Read. The. "Watch" Series. By. Sergej. Lukjanekow. In order: Nightwatch, Daywatch, Twilightwatch and Last Watch. Great books, everyone seems to hate them

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Music: DragonForce. Period. Not the lyrics or solo's, but what they embody: a group that have been shunted and ridiculed, but never stop, because they do what they like. I've seen them live in 2008 and thought all the new songs(Ultra Beatdown) were played rather good. All the old stuff lacked. The new live album shows they've learned that there's more to a band than CD's.