Coby TF-DVD7333 7-Inch TFT Portable DVD Player with Swivel Screen
Great Quality, Great Price!
I bought this item a few months ago whilst looking for something to use on long airplane flights.  I loved it--the battery life is fairly good for a portable DVD player (I usually get 4-6 hours from it).  It is easy to use and it carries well.  I have it strapped into the back of my car for when I carry my nieces and nephew around and it works great!  The disc rarely (if ever!) skips and the quality of picture is good.  It easily hooks to larger screens so that you can use it as your primary DVD player.  I love it!