Joss Whedon apparently got bored during the writer’s strike and called up a bunch of friends. The result was a low-budget film called Dr Horrible’s Sing-Along Blog:

I finally decided to do something very ambitious, very exciting, very mid-life-crisisy. Aided only by everyone I had worked with, was related to or had ever met, I single-handedly created this unique little epic. A supervillain musical, of which, as we all know, there are far too few.

The film will be broken into three acts, uploaded and streamed for free starting on July 15th and then converting to a paid download on or after July 20th.