Doctor Horrible’s Sing-Along Blog Posted bymrdoornbosJune 25, 2008Posted inCool Stuff, video Felicia Day, Nathan Fillion, Neil Patrick Harris, awesome!! Teaser from Dr. Horrible's Sing-Along Blog on Vimeo. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading...