Jeez, I watch so many...
all the Sci-Shows, Vlog Brothers, Certifiably Endgame, Kevin Smith, Darkmatter2525, Welcome to Nightvale, Geek & Sundry, Nerdist, Superman Homepage, Drawn to It, Red Letter Media, Filmcow, Cyanide & Happiness, Improvised Generation, Honest Trailers, PBS Eons, Startalk, Late Show, Sasha Sloan, Weird Al, Jon Lajoie, Ninja Sex Party, SF Debris, Steve Shives, Geekvolution, Qeuetimes, Ryan George, Journey to the Microcosmos, Ryan Reynolds, Barenaked Ladies, KindaTV, channels that post British shows like QI and Would I Lie to You that I don't get here, Dust, Major Grin, Nostalgia Critic/ChannelAwesome, BlameSociety, HBO, Shield of Tomorrow, Star Trek Continues, Star Trek Fan Made, Casually Comics, DC, Marvel, a bunch of fanvid channels and reactors...I'm sure I'm forgetting some I'll kick myself for later.