This week sees the release of Portal, and, more importantly, the release of blurry-eyed speed-runners upon the game's timed puzzles. Look on for an idea of what you're up against, and keep scrolling for a few clips from Team Fortress 2, Halo 3, Skate, StarCraft, and the always entertaining Garry's Mod.

Impossible Video of the Week: Portal
Like ice cream, Portal hurts my brain. I can only take so many mind-bending maneuvers before my circuits begin to freeze up. This four second domination of Challenge 14 by chezda is a triple scoop of pain.

Get the Flash Player to see this player.

Now You're Thinking Outside the Box Crate
This Portal player takes another pathway towards cake: cheating. Okay, not cheating--"creative thinking." Sineltor shows us how to stop worrying about our weighted companion cubes and love the PC, completing Advanced Challenge 18 in an unconventional run of 78 seconds.

Get the Flash Player to see this player.

So Much Blood
Is there anything better in online gaming than an unbridled, uncaring charge into the face of your enemies? Couple that feeling with the gleefully sadistic taunts of Team Fortress 2's Heavy Weapons Guy and you get a clip that is both heroic and hilarious, all courtesy of grodno.

Get the Flash Player to see this player.

Magic Bullet Theory
Is it luck, skill, or fate? You've seen Halo 3 videos of impossibly-landed sticky bombs and suicidal sniper shots, but here's one that would make Zapruder jealous. Catching an angled ricochet, spotteddogchez takes out two players with one shot, wounding a third for an easy follow-up kill.

Get the Flash Player to see this player.

Turn the page for Skate Exorcisms, StarCraft-announcing Koreans, and a little Fitty.

The Power of Cement Contorts You
Playing Skate is a bit like taking a trip to the ER, but without the bills and twice the fun. This creepy wipe-out in the Linda Blair style comes from Rock n Rye, via the excellent Skate.Reel website.

Get the Flash Player to see this player.

Competitive Arena: Boxer vs. [NC]Yellow
When the professional StarCraft player Lim Yo-Hwan joined the Korean Air Force in 2006, his career might have been over. Instead, Yo-Hwan--who is commonly known by his StarCraft handle "Boxer," or by his adoring fans as merely "Emperor"--formed the first all-military pro gaming team. Facing off against opponent [NC]Yellow in tournament play, Boxer proves in this video why Zerg rushes are so 1998.

Get the Flash Player to see this player.

Video of the Week: G-Unit
Still mind-blowing; still funny. Buckthegreat's epic 50 Cent-tracked Garry's Mod video has yet to be topped.

Get the Flash Player to see this player.

See a cool video that you think is worth sharing? Drop me a line: Nick@Shacknews.com