There is a better way.
Freedom of choice comes with a portable DVD player.
Screen-bearing models sport an LCD screen ranging from 5 to 7 inches. The screen seems small at first, but after using one on a plane, I thought it was great. If the screen is too small for your liking, there are accessories to enhance viewing. O Display Systems manufacture video glasses that give the illusion of the big screen. Now they may not be the coolest-looking things, but the images produced are pretty cool, and they do make you feel like you're watching a large screen.