Did somebody say "Camera"?
I shot some video of a bike ride yesterday. not a commute, but the camera mount was stable, secure, and offers a great field of view, so i wanted to share it.
This is a GoPro 960 mounted on a Nitto style light mount plug mounted on an M5 bolt screwed into a fender mount at the rear dropout. The processing downgraded the image quality, it's better in the original playback.
EDIT: i changed uploads, this one can get viewed at 480p, but a far cry from the higher def raw footage i've got.
The video was very stable and if the camera was aimed with a little more angle, would easily capture license plates as they passed.
Now, i'm not too keen on taping my commutes, but if i were, i'd run a light mount at the non-drive side of the bike with one camera facing forward and one facing rear. also, one camera at the front of the bike somewhere, i'm not too happy with handlebar mount, but one on the headtube itself has promise.