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The Making of Dr. Horrible's Sing-Along Blog
The making of 'Dr. Horrible's Sing-Along Blog'.
Released: 2007
Casts:
Felicia Day
,
Nathan Fillion
,
Neil Patrick Harris
,
Simon Helberg
,
Maurissa Tancharoen
,
Jed Whedon
,
Joss Whedon
,
Zack Whedon