Aside from the fact that I've never been closer to mental breakdowns than when I've been in an H&M dressing room, I'm jazzed on their virtual dressing room [1]. You can customize your model to look like you, down to height, weight, and measurements, and then "try on" clothes from H&M. (Note: They don't appear to be clothing items from this season's collection, but don't worry, I will totally do reconnaissance in the name of geek after work).

H&M appears to have someone geeky on staff, with their forays into SIMS [2] and cell phone-purchasing [3], so I am begging that person on behalf of conscious women everywhere: Please, please, please open an online store already!