Remember how cool it was when you bought Rock Band 2 and imported all the songs from the last Rock Band? Well, all but three of them. But remember how you got the sense that, yes, this isn't just a...

Waterloo Labs is a group of breathlessly enthusiastic engineering nerds in Austin. For their latest project, they rigged up a big screen with accelerometers that sense the position of any impact. They then projected Half-Life onto the screen and hired...