Yes, you could, in theory, strap theto your ski helmet, hit record, and see what happens. But a couple of companies are making extreme YouTube-friendly camcorders, and VHoldR's second-generation model is billed as "the first HD wearable camcorder."
VHoldR says it maintained the simplicity from its earlier standard-definition camcorder, but "seriously improved" the video quality, field of view, memory capacity, and the audio experience in the ContourHD. The camcorder is powered by a removable, rechargeable, lithium ion battery. It has a slot for a microSD card (it accepts cards up to 16GB for 8 hours of recording time), a wide-angle lens (135 degrees), and a laser-guided alignment system.
The ContourHD will be available in May for $300. To view video samples, visit VholdR.com.
Also worth checking out: the GoPro Hero, a competing extreme video recorder.