Music:
It's different every time. No favorite music lasts for more than a week. (Well I also don't love a specific genre, though hard rock is one that i never like, though there were exceptions).
Movies:
If it's good then it's good with me.
Television:
I just watch TV, though I do seem to like MythBusters, and Distraction (UK).
Books:
Ummmm... I really should start reading books.