Politics, piercings, tattoos, hair dye, music, movies, board games, pencil and paper rpgs, video games, computers, electronics, cars, bmws, motorcycles, world of warcraft
More than you'd care to read about.
Donnie Darko, A Clockwork Orange, Butterfly Effect, Bubba Ho-tep, True Romance, countless others I can't list at the moment.
Simpsons, South Park, Daily Show, Chapelle's Show, Arrested Development, Family Guy, Aqua Teen Hunger Force, Sealab 2021, Reno 911, History Channel, Discovery Channel, Comedy Central, Cartoon Network
Catch 22, 1984, The Hobbit, The Lord of the Rings
Darth Vader, Jello Biafra, Howard Stern, Martin Luther King Jr., Malcolm X, Karl Marx, Hunter S. Thompson, Che Guervara, others I can't recall.