If you have movies on your hard drive and want to stream, use PS3 Media Server, or TVersity on your computer and free app called AirAV, this one doesn't require transcoding of .avi files to stream. Streamtome will stream 720p .mkv files flawlessly, with no transcoding required. Good player will stream .avi file as well with no transcoding required, but I have found AirAV to be more reliable. If you are solely wanting to stream movies from the internet, then get Netflix, my son uses it and it works great.
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