Check out this handy LED light from ProdMod that attaches to the USB of your Flip.

You can use it for low light interview situations and it also charges your Flip with the flick of a switch. It runs off 2 x AAA batteries.

You might also want to look at this model from Alzo Digital, available on Amazon.com.

The ALZO 730L is an AA battery-powered LED light with 30 LEDs in a 5×6 array that are beam focused to 30 degrees –  6500K color temperature (cool white light/daylight). The ALZO takes 4 x AA batteries which provide 2 hours of continuous operation.

Includes slide-in warming filter for lower color temperature, and standard shoe mount with lock wheel that fits the light bracket. Dimensions: 4.75″w x 3″h x 1.75″d. Weight with batteries: 10 oz.

Price $69 at: Amazon.com.