The Creative Vado is small, lightweight and can record either 1 hour or 2 hours of video and charges and downloads via USB. Its only $99 too!

Product page for the current camera:
http://us.creative.com/products/prod...WT.mc_id=16960

Works on a Mac too!
http://us.creative.com/products/prod...ct=17761&nav=3

However, it looks like Creative may be updating its Vado camera with a new HD model as well that you may be interested in:

http://www.vimeo.com/2228817