It's been a while since I commented/ replied on here so i'll do it again Dragon Ball Z, Littlest Pet Shop, My Little Pony Friendship is Magic, Naruto Shippuden, Teenage Mutant Ninja Turtles 2012- present version plus pretty much every Marvel and DC superhero cartoon that is currently being shown on t.v. with a few exceptions.
I've been in a lot. World of Warcraft (When I was playing it, but I quit) But I was involved in enjoying and creating fan content, mostly machinima. Stargate. Just watching the show over and over, never part of any community. Startrek. Just watching the show over and over, never part of any community. Final Fantasy. Was a regular member of forums. That Guy With The Glasses.com. Was part of a community of Comedy video reviewer trying to become a featured talent on the website. The Angry Video Game Nerd. He inspired me to study Film-making. Legend of The Seeker. (TV show based on my favourite series of novels) Was part of a vocal fandom that tried to save the show from cancellation due to low ratings. Civilization IV. Put over 1000 hours into the game and tried out just about every good user made mod that came out. Super Smash Bros. Melee/Brawl. Put over 1000 hours gameplay into it. Me and my friends played it all day every saturday for 3 years. Inspired my longest fanfiction other then my MLP ones. Dungeons & Dragons. Dungeon Master for many years and wrote some short story fanfiction. Minecraft. Ironically I spent more time watching videos about the game then I did playing it. Perfect Dark. The not very well known spiritual sequel to Goldeneye. Superior to Goldeneye in every way and in my opinion has never been surpassed by any multiplayer FPS since. 1000 hours of gameplay. But none of these have inspired more passion, creativity and friendship as My Little Pony. Best Fandom Ever! Edit: Keep thinking of more and more.
Would Green Day count as one (oh well, the older kind like Dookie) -Doctor Who -Marble Hornets/EverymanHYBRID/Tribe Twelve -South Park -Dan VS
-Doctor Who -Gravity Falls -Final Fantasy (Zidane FTW!) -TMNT -Rocko's Modern Life (Ah, the cartoon of my childhood and young adulthood...) - Fringe (I miss this show so freaking much! Walter is easily one of the greatest characters ever created. "I like porcupines; they show God has a sense of humor." Oh, Walter...)
I also like One Piece and Sailor Moon on top of the entire Dragon Ball series but mostly Dragon Ball Z as well as original first series Naruto and Naruto Shippuden that's why I consider my self a semi or small Otaku because while I don't watch a ton of Anime shows or am a fan of several anime shows i'm still a fan of a few Anime shows.