Why you’d ever wear one of these is beyond me. The Third Eye Video Camera records 320×240 video onto an included 8GB microSD card. This means you’ll be able to record up to 6 hours of video or 1,200 still images of your life in first person, although the battery only achieves a 2.5 hour life on an 8 hour charge via USB. Optionally, you can set the device to record when movement is detected. But if it’s strapped to your forehead it’s probably safe to say you’ll be continuously recording at all times.
Available here for $300.