As a response to the 2007–08 Writers Guild of America strike, Whedon directed, co-wrote and produced Dr. Horrible's Sing-Along Blog.
It tells the story of Dr. Horrible, an aspiring supervillain, who shares a love interest in a girl named Penny with his nemesis, Captain Hammer.
To Whedon the miniseries was "a project of love", an accomplishment that from their excitement would be embellished with passion and "ridiculousness".
His half brothers Zack and Jed and sister-in-law Maurissa Tancharoen share the other writing credits.
Whedon said it was a "glorious surprise" to him to discover how well they worked together.

After having attended meetings with companies discussing the prospect of producing something for the Internet, and faced with negative feedback on his ideas, he realized that as long as the strike was still in progress, acquiring corporate funding was an unlikely prospect.
Whedon funded the project himself with the investment of just over $200,000, and earned more from it than he did directing The Avengers.
He enjoyed the independence gained from it, as it provided him the freedom to include content without the expectancy of lessening it on behalf of the runtime.
He and Jed composed the music, parts of which were influenced by Stephen Sondheim.

The miniseries was nominated and won numerous awards.
Whedon was awarded Best Directing and Best Writing for a Comedy Web Series at the Streamy Awards, a Hugo Award for Best Dramatic Presentation, Short Form, and a Creative Arts Emmy Award in 2009.
As a response to the 2007–08 Writers Guild of America strike, Whedon directed, co-wrote and produced Dr. Horrible's Sing-Along Blog. It tells the story of Dr. Horrible, an aspiring supervillain, who shares a love interest in a girl named Penny with his nemesis, Captain Hammer. To Whedon the miniseries was "a project of love", an accomplishment that from their excitement would be embellished with passion and "ridiculousness". His half brothers Zack and Jed and sister-in-law Maurissa Tancharoen share the other writing credits. Whedon said it was a "glorious surprise" to him to discover how well they worked together.
After having attended meetings with companies discussing the prospect of producing something for the Internet, and faced with negative feedback on his ideas, he realized that as long as the strike was still in progress, acquiring corporate funding was an unlikely prospect. Whedon funded the project himself with the investment of just over $200,000, and earned more from it than he did directing The Avengers. He enjoyed the independence gained from it, as it provided him the freedom to include content without the expectancy of lessening it on behalf of the runtime. He and Jed composed the music, parts of which were influenced by Stephen Sondheim.
The miniseries was nominated and won numerous awards. Whedon was awarded Best Directing and Best Writing for a Comedy Web Series at the Streamy Awards, a Hugo Award for Best Dramatic Presentation, Short Form, and a Creative Arts Emmy Award in 2009.
Joss Whedon