I have some friends who like to make fun of me because I totally dig Dance Dance Revolution. Okay, I have a lot of friends who make fun of me for it. But considering I have never played World of Warcraft, I don't know any kind of programming languages, and I have never seen an episode of Star Trek, I need to have some other way to express my inner geek. Hence, DDR. Which is why I was totally pumped to read on Gizmodo that somebody has put up an extensive tutorial for how to make your own DDR deck, like the kind they have in arcades. It'll cost $400 and take approximately 16 hours as well as some building know-how, but that's a small price to pay for being the coolest nerd around. Way better than just a mat to hook up to your PS2.
Imagine how this could enhance your backyard parties! (Or rooftop parties, for us urban dwellers.) Pair it with the light-up inflatable bar (Tim Moynihan's inflatable girlfriend optional), and man, that's one outdoor shindig you sure don't want to miss. Just make sure you have a massive outdoor TV, too.