Zachariah Scott, Cinematic Designer at BioWare who has worked on Mass Effect 2 and 3, is also famous for making some pretty awesome things with Source Filmmaker. This time he has turned his skills, quite successfully, to Portal 2.

"Fun story about this video, I've been trying to make it for about 6 months, it's a super late Turret Week video. I kept overthinking it, and had much of the principal synchronization done but couldnt' figure out how I wanted to shoot it, well I sat down this weekend and knocked it out in two days, and I'm pretty sure nobody will have any problem with the results."

The end result is quite something and is well worth a look, as are his other videos. He's covered most of the Valve games; Left 4 Dead, Half Life and Team Fortress 2.