Books.Children's books. I don't read books for adults, because clearly they have stupid themes and don't understand anything about people. My brain is still stuck at fourteen.
It used to be Harry Potter, the yearly tradition (on no particular day). Or The Seventh Tower, or A Series of Unfortunate Events. Even before that, more like when I actually was fourteen or younger, it was all the rest of my books -- Nancy Drew & Hardy Boys, The Babysitters Club (although I wasn't really into them; I just kept receiving them from people), Boxcar Children, Louis Sachar books, and even those reader books that have collections of poems and short short stories in 144 pt font for primary grades kids.
I'm kind of growing out of that a bit, and I'm a little more likely now to watch tv shows instead. Depending on my mood, I either want to watch something cute and comedic (Pushing Daisies, or nichijou), or something more dramatic like Grey's Anatomy (because I have invested much time into that show).
I want to say, as I am reminded of ASoUE, that some media have really good reason to go back to them, and that's pretty magical. They're good because they use whatever your set of experiences are at the time of engagement to give you an adventure; it changes or develops over time, with you. Mmmmm.