Polaroid PDV-0700 7" Portable DVD Player
Great buy for the money!
I picked up my unit from a local Best Buy for $250 (not including tax).  Note:  THIS UNIT ALSO PLAYS .MPG FILES!!  This is great for me since I record shows on my computer via my ATI TV Tuner card.  Now I can simply record my shows (in the .mpg format) and burn them onto CD or DVD when I'm on the go!