How to play videos? Which video formats can be played?
Locally saved files
If you want to playback video files saved locally on your SD/MicroSD card, you can use Apps - Video Player or Apps - Gallery.
Media shared over a local network
Please consult the DLNA section of the manual for detailed instructions on how to set up your network for sharing of media (movies, music, pictures)
Media on the internet
Apps - Video Unlimited gives access to Sony's premium video delivery service.
Apps - Youtube gives access to Youtube content
Apps - Market brings you to the Android Market, where various other apps can be downloaded which give access to online video content.