Let the hive mind of Engadget get that for you.
"I own an iPhone 3G and I'm looking for a decent speaker / alarm clock for it. I am going to listen music in a mid-sized room, so I want nice quality speakers with solid bass. I also want to use it as an alarm clock, so it would be great if there is such a feature. The price can be low-mid to mid-high range. I was looking at the Klipsch iGroove SXT; it's powerful, slick and the reviews are good, but it doesn't have an alarm clock feature. It's no deal breaker if I can set it up from the iPhone, but I'm not sure. Thanks!"
it was well known that Sony had in development, early in the ps2 life cycle, various motion sensing equipment.
the sixaxis is a great example of that technology.
for me this is not surprising at all, and somewhat expected. they spent all those years developing it, makes sense to reap some money from those projects.
(can't remember links, but several podcasts mentioned it around the time that the 360 device was "announced". the one that springs to mind is the 1up podcast.)