Welcome to the Replay Couch, where we kick back and watch the best, and worst, of recorded video game history. New to the series? Take a look at past editions here.

Have you seen a cool video prowling around in your internet neighborhood? Contact the authorities: Nick@Shacknews.com

This week's catch includes a Fallout 3 dance-a-thon, a batch of Left 4 Dead Hunter tricks, a live action Mario Kart stunt, and a couple of very special trailers.

Fallout, Funkified (link to this video)
A guy named Umpa made a mod that causes Fallout 3 characters to dance, and then a dude named airshom exploited it to produce this gem of an internet video.

Shotgun Wedding (link to this video)
At first I wasn't sure that Bandersnatch187 was onto something, but I think he's actually tapped into a shared experience amongst all gamers with this simple Fallout 3 demo.

Please install Flash to view this Shackvideo

Trick Hunting: How to Impress Boomers, Eat Humans and Succeed at Left 4 Dead (link to this video)
lauri and friends have officially brought trickjumping videos to Left 4 Dead. Now to embarrass myself in attempting the same moves.

Please install Flash to view this Shackvideo

Trailer of the Week: Illbleed (link to this video)
This stupendous trailer for the ill-fated Dreamcast title Illbleed was a product of the Sega system's final days. Fortunately, like a German documentary, it has outlived that console war to survive as a fascinating, hilarious relic.

Warning: this amazing trailer may cause spontaneous, yet pleasurable vomiting.

Please install Flash to view this Shackvideo

Turn the page for more.