Another one to check out is Buzz Player HD, I like this one quite a bit. If you don't want to buy an app then download handbrake HandBrake for free and there is a preset for the iPad to convert different formats to H.264 format. It works pretty fast and I haven't had any problems with it. One thing to keep in mind is a majority of movies are formated for 16:9 but the iPad is 4:3 so you are going to have some dead space above and below the movie. There is a zoom button to fill the entire screen but if you choose that then you will lose view on both sides of the movie.