I record my road rides because I have a blog! Mostly I grab screenshots. Once in a while I'll capture some video that might be of interest to the cops or insurance:


I got a free Fly6 from a distributor to do a review on - I keep it on my commute bike because it has a neat flasher - it records on loop unless you crash or upload the files.
It does do a pretty good job of capturing license plates and such.