This is sort of a fan's response to Dr. Horrible. In it, the Фан dressed as "Dr. Dreadful" applies to be Dr. Horrible's sidekick. Made by Mark Andrich.
The eleventh track of Dr Horrible's Sing-Along Blog's Commentary: The Musical, сердце (Broken). Main Parts by Joss Whedon, Backing by Jed and Zack Whedon and Maurissa Tancharoen.