This is a live-action Portal skit done at Fanime 2011 recently. It's pretty damn good!
Plenty of good stuff in this Destructainment! Check out some Warthog tricks, see another Portal inspired fan film and then rage at the Super Nintendo urinal. After that, we see that Cole Phelps is a horrible detective, laugh at some Modern Warfare/Metal Gear Solid outtakes and see that saving animals in Sonic the Hedgehog 2 isn't always such a good idea.
The Destructainment finishes up with a fresh trailer for the original Half-Life and the Mega64 gang announcing "Transfarring."
Warthog tricks in Halo: Reach.
Mega64 reveals Transfarring.