Audiovox DVD1680 7-Inch Portable DVD Player
A must if you are traveling with young children
This item has been invaluable to us on our cross country trip.  We drove from NJ to California and this works great in the car.  It fit perfectly between our drivers and passangers seats and we just strapped it down with bungy cords.  It does not skip at all when we drove over bumps.  Both of kids have no problem viewing and hearing it in the back.  In addition, we were able to hook it up to a regular TV so as we are visiting relatives without a DVD player, we are able to use this.  It is great that the car adapter is included--most of the other ones we looked at did not include it.