Watching a 1.5-2hr movie on a 3inch screen? Sounds painful to me. I could barely watch 30 minutes of a movie on those 7inch screen portable dvd players before getting restless. I have a 6.5inch screen with dvd player in my car and even then I still watch less than 5% of dvds on it. The screens are just too small to fully enjoy a good movie on, not to mention how tough it is to find a position comfortable enough to watch a full lenght movie in. I would say the minimum screen size for me to enjoy the movie would be on a standard size laptop.