When we got an e-mail with "so you think BF3 is realistic?" in the subject line, we figured it was just another Modern Warfare 3 promoter.

But instead, we were directed to YouTube, where we saw something that is bound to incite plenty of discussion amongst gamers and non-gamers alike.

It's the Ultimate Battlefield 3 simulator, built by Channel 5's The Gadget Show. It features an omni-directional treadmill that actually requires you to move (not sure about actual running), a wireless gun system, a grand total of five high-definition projectors within a massive dome, and ridiculous surround sound.