'Dr. Horrible' Sequel: Joss Whedon Updates On Second Neil Patrick Harris Film

Joss Whedon is a busy guy. A writer/director/producer and cult god, the geek icon is shepherding to the big screen one of next year's most anticipated movies in the Marvel epic "The Avengers," as well as a "Much Ado About Nothing" adaptation he somehow managed to find time to direct in his down time. But, as geek icon and benevolent leader to a loyal internet following, Whedon has certain commitments that far exceed other Hollywood-centric auteurs, and right now, he has a pressing doctor's appointment he must keep.

In 2008, Whedon directed the tragic comedy musical web series, "Dr. Horrible's Sing-Along Blog." Starring Neil Patrick Harris as the titular diabolical wimp, it also featured Whedon show veterans Nathan Fillion and Felicia Day in the story of nerdy evil vs. handsome heroics. A cult hit, it has, like everything else on the internet, generated rumors and buzz about a potential sequel, with Whedon and Harris hinting over the past few years that it will, indeed, happen at some point. But when?

Speaking to Yahoo! Movies about the Avengers, Whedon punctuated a conversation about the world's greatest superhero team with a quick update about the world's nerdiest villain.

"We have been working on that for a while. It's been hard, because we all have jobs, and some of them are extremely taxing," he said, no doubt alluding to his own film work, Harris's work on "How I Met Your Mother" and Fillion's work on "Castle." "But we have had a vision of the thing for a while, we have been working on it, we have a bunch of songs and a few scenes. We need a little free time and right now that's plenty hard to come by."

It's not the most concrete or promising of updates, but it's progress; in March of 2010, Harris seemed to have no idea what the future held for the series, beyond a potential hunch on its releasing platform.

"I don't know what their plans are, but I don't think it will be on the Internet," he told MTV. "I think it will probably be a film. Now we have to figure out everyone's schedules."