By Amanda Yesilbas and Charlie Jane Anders. We all live in fear of the day when Game of Thrones starts to suck. We've lived through this trauma before — many great television shows went astray, often due to one highly questionable decision. Here 10 once-terrific shows, and the exact moment they started to suck.

It's March, which means it's time once again for the most important tournament of our age: io9's March TV Madness. Yes, after crowning the best and worst sci-fi movies of all time, this year we turn our attention to television, as 64 of the best sci-fi and fantasy shows ever made square off in our bracket. It's time…

Holy crap someone got Kyle MachLachlan to do a Twin Peaks style Harlem Shake. It's.. hurting... our brains. So much amazing and so much terrible wrapped into one tiny video. Hate it or love it, you won't be able to stop watching it.

Tim Doyle's UnReal Estate series of illustrations examines places (sometimes mobile places) from pop culture through the lens of nostalgia. He draws each subject as if it were a real place, a place filled with memories, and perhaps even a place he misses.

Check out the first clip from the second half of the animated Dark Knight Returns adaptation. Showrunners Jonathan Nolan and Greg Plageman discuss what's ahead on Person of Interest. No, Twin Peaks isn't really coming back. Plus American Horror Story spoilers!

News of Carl Sagan's involvement with a plan to "nuke" the moon, Project A119, has become relevant again. In fact, Sagan was involved in a number of military causes during his all-too-short lifetime. But later, he cut all ties with the military. Here's what happened.

The best science fiction and fantasy television hooks you with endless suspense... including hair-raising cliffhangers. But only the greatest cliffhangers can make you throw your remote at the screen, and keep you wondering for weeks. Here are the 20 awesomest.

This is, excuse me, a damn fine Twin Peaks inspired art exhibit. Come celebrate the 20th anniversary of David Lynch's Twin Peaks: Fire Walk with Me with this horrifically gorgeous collection of Twin Peaks art!

Doctor Who's River Song has got a tough time ahead of her — she's joining the biggest science fiction team of them all: the Legion of Formerly Mysterious Characters. Along with Darth Vader, the Man in Black and the Cigarette-Smoking Man, she'll dwell in a place where almost everybody knows all about her.

The fall TV season is beginning, and that means one thing — you're finally going to get to see the TV pilots that the networks have been sweating over for a year. Most of them will totally suck — even if the shows they launch wind up being good. But a few of them will be amazing, full of killer action and interesting…