This might be a bit of a long list. I have a lot of quirky hobbies. Though, the thing with my hobbies is, I don't really have any casual hobbies. Anything I get into, I have to fully immerse myself in the history, obtain everything related to it (if applicable), and generally let it consume my life. For example, I got into Persona 3 a few months ago, and now I'm on an epic quest to play every Shin Megami Tensei game in the franchise (though I won't dare to contest Genowyn for that title). Anyway, here goes.
Fapping: Seriously. Don't even try.
Pinball: I fucking adore the shit out of pinball. It's the best form of entertainment in the entire universe. I don't actually own any tables, but I'd seriously never get any work done if I had one. The level of intimacy, strategy, and skill involved in pinball is something nothing else can fully capture.
Floater (the band): I have no idea why people don't know about/like these guys. They're pretty much a grungier version of Rush. Catchy hooks, awesome riffs, slick bass grooves, and tribal drums. They even bust out some ambient shit from time to time. Everything they put out has kicked immeasurable amounts of ass, and you're doing yourself a major disservice if you don't listen to them.
Devin Townsend: I'll share this one with Lat, maybe, as long as he promises to only wear the crown 3 days a week.
Rock Band/Guitar Hero: I still play them. I still buy new songs for them. Super awesome fun time.
George Carlin: The avatar knows all.
Friends: I've seen every episode numerous times. I could probably tell you what episode, which season, and episode number from watching about 25 seconds of one. It was a downright unhealthy obsession for about 3 years.
Buckethead: Again with the sharing with Lat. He can have this crown for 4 days though.