Mintek MDP-5860 5-Inch Portable DVD Player
Great Quality for the Money
I bought this for my son as a Christmas gift and showed it around at work before I wrapped it.  Everyone who saw it was surprised by the clear picture.  The sound that comes out of the player isn't the greatest but plug in a good pair of headphones and it is improved ten-fold.  The DVD player comes with a car adapter, battery, and AC/DC plug for power so you can use it anywhere.  It fits perfectly in a small CD holder I bought for a few bucks and that is convenient to pack or carry.  My son absolutely loved this gift!