Re: Dr. Horrible's Sing-Along blog
I'm going with Penny turning out to be a secret villain who is going to use the hobos as an army for her nefarious deeds. She did hint at a tragic past in her song at the laundromat, and it would make for a nice ending that suits the sweet tone of this whole thing.
She's Bad Horse!
“Wisdom comes from experience. Experience is often a result of lack of wisdom.”
― Terry Pratchett