"Buffy the Vampire Slayer" producer Joss Whedon has created a three-part musical comedy entitled "Dr. Horrible's Sing-Along Blog," to be streamed online starting Tuesday, July 15, 2008. The cast includes Neil Patrick Harris, Nathan Fillion and Felicia Day.
The Hollywood Reporter article:
Joss Whedon's a hero with 'Dr. Horrible'
The website:
http://www.drhorrible.com/
Part One will be available on the 15th, Part Two on Thursday, July 17th and Part Three on Saturday the 19th. All three parts will be available online only until midnight July 20th.
A downloadable podcast and a DVD may be available in the future. The website has a teaser trailer.
It looks like a lot of fun. The musical episode of "Buffy" was quite good.