Here's a demo of the GoPro HD Hero 2's new 0.5 second timelapse mode. This grabs a photo every half second (slower intervals are also available), which you can then assemble into a movie using third party software later. This was turned into a movie by Quicktime Pro, before scaling, editing and outputting into 1080p in Premiere Pro.
This is part of my GoPro HD Hero 2 review at Camera Labs:
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