DVR-MS is the format Windows Media Center records to from the TV Tuner. I have always wanted to play with this format (trimming TV Shows, removing segments from the middle (*cough* Ads *cough*), and just generally larking about with the format. Well, Stephen Toub has a post on his blog (which was originally posted on the MSDN site, but, as he mentions on the blog, has disappeared) which talks about using API’s to talk to DVR-MS files. Very cool stuff! Now all I need to do is start to play! :)