i use the kodak playsport zx5.. it was cheap at 160.00 at walmart, you can take video in 10ft of water with no problems.. its awesome... they will mount on any regular tripod with the screw on the top and it uses SD cards.. it has the anti-shake thingy on it so if your hands shake like a mofo it makes your video look professional.. haha.. it will record in 1080p and is mp4 files.. i use windows live media for my editing... and it will take pictures too, its about the same size as a cell phone
i have a 16gig SD card in it right now and can take up to like 4 hours of video, plus i have a 4gig and a 2gig cards as well..