You could, in theory, strap the Flip Video MinoHD to your ski helmet, hit record and see what happens. But a couple of companies are making extreme YouTube-friendly camcorders, and Twenty20's second-generation ContourHD model is billed as 'the first HD wearable camcorder'.
Twenty20 says it has maintained the simplicity of its earlier standard-definition camcorder, but 'seriously improved' the video quality, field of view, memory capacity and audio experience with the ContourHD. The camcorder is powered by a removable, rechargeable lithium-ion battery. It has a slot for a microSD card (it accepts cards of up to 16GB for 8 hours of recording time), a wideangle lens (135°), and a laser-guided alignment system.
The ContourHD will be available in May for $300 (£205). To view video samples, visit VholdR.com.
Also worth checking out is the GoPro Helmet Hero Wide, a competing extreme video recorder.