PS3 Video 9 is a free video conversion application. You can convert your computer video files into the video formats that are playable on PlayStation 3 (MPEG-4 SP, MPEG-4 AVC, MPEG-2, MPEG-1):
http://www.redkawa.com/videoconverters/ps3video9/.

Downloading unlimited movies, games, music and other media to consoles such as PlayStation 3 is very easy. For the different streaming options check out Gamespot and Google.

When streaming to a console, use a network-connected computer for your media. Recommended is a wired connection (for maximum bandwidth) and software; choose from successful TVersity or recommended XBMC (more advanced). You can even get YouTube and other web data straight onto your PlayStation.

Whatever you chose, bringing video to your console leaves you with far greater options than increasingly obsolete satellite and cable.

For your entertainment be sure to also check out
unlimited PS3 downloads and streaming of Playstation3 games, movies, videos, TV, sports, ebooks, software, pictures and music.