I'm sure the guy wasn't dumb enough to reveal anything that would give away exactly who he is, right? He didn't take a picture of himself holding the 3DS or anything did he?
1) What Jumpman said
2) Near the end of the video, you can see a good amount of his forehead in reasonable quality, it also shows his hair color and style.
3) You can clearly see the branding on the shirt he's wearing in the reflection
4) Should they locate his house and get access to it, they'll be able to see the wireless phone, which is quite visible in the video and is clearly a Motorola. The model shouldn't be that hard to locate either. He has a long, large, Razer mousepad, and the brand is visible on a nearby speaker, which the camera comes within a foot of.
5) The computer is easily visible at the start of the video, you can see what is on the toolbar and the classic Winamp splash screen is visible on the bottom right. (The one that pops up when a new song is played) The make and model aren't visible, but it looks like it's a flatscreen desktop with a small black box (the tower?) next to it on a wooden piece of furniture designed to hold the computer, aswell as a cubby which holds the speaker mentioned before.
They really didn't think this through that well . . . . .