Despite the fact that this series was broadcast on the internet rather than on TV, it was named the 4th best TV show in 2008 by Time magazine (behind the Presidential Election at #3, Mad Men at #2 and The Shield at #1).
The “set” was actually a house previously made over to look like a mad scientist’s lair by TV home makeover show Monster House.
When Dr Horrible steals the van, the “remote control” he uses is actually an iPhone.
The entire thing was filmed in 6 days.
The series spawned thousands of application videos for the Evil League of Evil from it’s loyal viewers.