Plex, the popular Mac-based media center software (a fork of the XBMC HTPC software) Just has a new version released a week ago and is getting more plugins.
PBS
Watch all 27 programs offered from the PBS website, browse by topic or by collection, see what the most popular shows are, or search for videos.
Sub Pop Records
Listen to music & watch music videos by the Subpop record label of Seattle.
iMovies
Stream hundreds of free, public domain movies, films & cartoons.
Read more about the new Plex plugins at the Plex Blog here and here
