Now they no longer follow the rules of the Living, the Undead are always that little bit stronger.
Before Joss Whedon officially confirmed an Act Four for Dr. Horrible's Sing-Along Blog at Comic Con, Felicia Day (Penny) agreed with an interviewer that there HAS to be a sequel and went on to muse that when it comes to sci-fi/fantasy being dead doesn't always mean that your character will never be seen again.... which then led me to think this.
I just did this for fun but, God help me, if I don't kinda want this to happen!
Edit Feb '09: Okay, Nathan Fillion has confirmed both he and Joss Whedon really want to do a sequel and have been brainstorming ideas but it could still be quite a while before any filming actually takes place as Joss also wants to take care of "Dollhouse" and Nathan himself is filming a tv show so don't any one get too excited. It could be years before Act 4 turns up yet in whatever form it will take!