Access Navi-xtreme content from Boxee. Navi-X provides a directory of user-submitted lists of TV and Movies found around the internet.
You can find pretty much any type of video you are looking for with Navi-X. The one problem that I have is that many times the videos do not play smoothly. While this is not the fault of Navi-X (they only point to videos stored elsewhere on the web), it does make for viewing some videos extremely difficult. Other people though have reported great success so I would suggest trying for yourself to see the results you get.
It appears as though there are still problems with main Navi-X repository address. If you are having difficulties with that repository, try the repository http://dir.fuzzthed.com instead.