10. 'Community' (NBC)
This is the fifth time I've watched a Community season finale, but the first where I thought the show had a prayer of getting renewed for another season. (Like Abed explained, "If not, it'll be because an asteroid has destroyed all human civilization. And that's canon!") So naturally, this was where NBC pulled the plug. It's tough to see a beloved show end, but blaming the network would be like blaming owls for how much you suck at analogies. This was the right time to finish the story — Dan Harmon came back to give his Greendale crew a proper Viking burial, making up for the fiasco of last season's Harmon-less "gas leak year." It didn't hit the heights of the first three seasons, but as Annie would say, it put the cherry on top of this total lack of sundae. And the bang-up two-part finale was a reminder of why low-rated (but great) sitcoms are just like lame (but essential) friendships. That's canon!