Image via WikipediaTHere are several "television networks" for programming made in SecondLife. All these networks have scheduled shows, live feeds, websites, and ways to talk about the shows. And many of them have ways for you to share your machinima with the world too.
Metaverse TV - http://metaversetv.com/
They have a variety of programming - news, fashion shows, comedy. They just started a new show called Claim the Fame that seems to be for fashion designers. You can watch on their web site or on YouTube and Blip.tv. I was watching an episode of the Stylist of the Year contest. The production values are really high on these shows, good sound, interesting visuals. They have a news program, MBC News, about many virtual worlds that I am going to start watching regularly. I made a post with one of their programs embedded from YouTube.
Treet.tv - http://treet.tv/
They have 2 "channels" - entertainment and business, with a variety of programs on each channel. I go to the Metanomics presentations in world. Treet.tv shows those on the business channel along with tech news programming. On entertainment they have a variety of SL sports including giant snail races, dirt bike races, sailing and hockey. There are arts and literature programs as well as a weekly fashion program and a trivia program, The 1st Question, hosted by Pooky Amsterdam . You can watch on their website or in SecondLife using a special tv viewer they created. Their shows have ads.
Metamix TV - http://metamixtv.com/
THis group is new/old. They took over an existing network (rezzed.tv) and are building a new sim, putting together a new show lineup. It's headed up by Flimsey Freenote, Chantal Harvey, Toxic Menges, Kit2Kat, and Phaylen Fairchild. SL wrestling will be on this network as is coverage of Simball matches. They host "The Phoenix Hour" with developers of the Phoenix third party viewer. They have a variety of talk, opinion, and reality programming. They plan to broadcast in HD. They interrupt their programming with advertisements. Here is one of their shows.
Virtual World Network VNW1 - http://www.virtualworldnetwork.tv/
This network has shows on fashion and art, and sports like automobile racing and wrestling.