Depends on what you want to do with the videos.
640x480 on a good camera is good enough for youtube vids. It will look rather unimpressive in a project for TV (720x576)
The Gorillapod tripod is an awesome gadget I definately need to buy, but I'm not sure if it'll be useful for the CES - such a tiny tripod is not ideal for macro-shots. I think a regular, "big" tripod will allow you to firmly plant it on the ground and use the camera's optical zoom to get close to the action.
That said, I think there is a gorillapod with really long legs. That could allow you to place the camera right ABOVE the eReaders you're trying to film (maybe by doing some upside-down gymnastics with the bendable legs)
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