There is a new app similar to bemyblackbox on the market
Daily Roads Voyager unfortunately, like Bemyblackbox it doesn't seem to work on the Droid. Just records black for the video, although it does record sound, and unlike Bemyblackbox, it claims to be able to record in the background so you can use Navigation at the same time. I contacted the developer to see if I can help troubleshoot the Droid issue.
It will also do intermittent still shots, but I haven't tried that yet.
Alan
Now works with the Droid. The developer added the ability to select the Codec. h.264 and Mpeg4 work. H.263 doesn't.
Playback within the app currently only works with H.263, but I imagine he'll update that soon, but you can play the videos back with the Droid's own player, or with your PC.
Until he gets it uploaded to the market, you'll need to download the updated version here:
DailyRoads Voyager
Note: every time you leave or return to the preview screen, it restarts another temp video, so you should set it to "rescue" the last three videos, and if you see something you need to capture, and you have been in another app, you should hit the video button to rescue the last three as soon as you return to the app. (since it restarts when changing states, the videos may not be the full length you set, which is why you want to rescue several. this will make sense when you read how the program works on the web site).
Alan