CineXPlayer: A powerful movie app: One of my favorite media apps for this is CineXPlayer, a powerful and versatile program for $3.99 that lets you watch your Xvid high-def movies and other formats on the iPad even if they aren't supported by the tablet natively. That way, you don't need to first convert your video content into a file the iPad can read.
Along with being the only iPad app that supports Dolby Digital Plus audio for clear and well-balanced sound, CineXPlayer can also convert your 2-D movies into 3-D to playback on a compatible 3DTV (via a 99 cent in-app purchase).
Similar to the VLC app, which got pulled off the App Store earlier this year, getting content into CineXPlayer is easy. Connect your iPad to your PC or Mac and open iTunes. Click on the App tab of your tablet and scroll to the bottom to see apps that support drag-and-drop functionality. Now, you can take movies off your hard drive — such as .Xvid, .AVI, .MOV, .M4V, .3GP and .MP4 files, or ripped from DVDs using software like Handbrake — and copy them to this folder. Unplug, and then go.