Overview
The making of 'Dr. Horrible's Sing-Along Blog'.
Cast
- Felicia Day as Self
- Nathan Fillion as Self
- Neil Patrick Harris as Self
- Simon Helberg as Self
- Maurissa Tancharoen as Self
- Jed Whedon as Self
- Joss Whedon as Self
- Zack Whedon as Self
The making of 'Dr. Horrible's Sing-Along Blog'.