NFL, films, comics, music, games, books, knowledge and, you know, stuff...
Led Zeppelin, Frank Zappa, Ben Folds, Counting Crows, Cat Stevens, Jeff Buckley, Rolling Stones, Less Than Jake, Chili Peppers, Elvis, The Doors, The Clash, The Jam, Alfie, Paul Simon and loads more...
M*A*S*H, Blade Runner, anything involving Charlie Kaufman, The Princess Bride, all the Monty Python movies... I'll add some more later.
Samurai Jack and Family Guy is all I need...
Any Discworld, 1984, most of Alan Moore's work, Preacher, Philip K Dick... in fact, anything with a dystopian future is a good start, also non-fiction philosophy and history though not so much since I left university.
Bill Hicks, Carson Palmer, Uncle Franky... I'm sure there are more - I'll add them when I remember.