You want cheap? Here is a cheap POV camera at http://woot.com. This
is available TODAY ONLY, March 26 (as are all Woot sales).

This is meant to be mounted to a firearm or paintball gun. I don't
know how wide of an angle image it will take but I assume fairly
narrow. I can't find a sample video on the web.

Center Point CPAC2X Universal Video Camera - $49.99 (regularly $125)
http://centerpoint.crosman.com/cameras/CPAC2X
http://www.crosman.com/pdf/manuals/CPAC2X-515.pdf

Record your shooting adventures in full-color video and digital audio
to share with your friends, family and the world. Fits most airsoft
and paintball guns and it's PC and Mac compatible with no special
software required.

Universal JMPEG 720x480 30 fps video with digital sound
User friendly controls and LED indicators
Mounts on most airsoft and paintball guns:
- Standard weaver-style rails
- Standard picatinny rail
- 5/16 threaded bow mounts
Lightweight, durable metal casing
Built-in microphone
2x zoom
Ability to record to micro SD card, up to 32GB (NOT included)
Can use any standard 30mm optics and accessory mounts (NOT
included)
Compatible with optional remote (NOT included)
Rechargeable lithium polymer battery
Records 3+ hours on a single charge
Charge battery and transfer data with included mini-USB cable
Lens protector film is also included