TUESDAY, OCTOBER 9

"Dr. Horrible's Sing-Along Blog" - (9:00-10:00 p.m. ET)

(Content Rating TBD) (HDTV)

JOSS WHEDON'S ACCLAIMED ONLINE MUSICAL MAKES ITS TELEVISION DEBUT - Neil Patrick Harris ("How I Met Your Mother") stars as Billy, a.k.a. Dr. Horrible, a budding super villain whose plans for world domination continually go awry. His two goals: getting accepted into the Evil League of Evil, and working up the guts to speak to his laundromat crush Penny (Felicia Day, "The Guild"). The only thing standing in Billy's way is his superhero arch nemesis, Captain Hammer (Nathan Fillion, "Firefly," "Castle"). With one big score, Billy could get into the E.L.E. and earn the respect of Penny, but only if he can keep her away from the dashing Captain Hammer. Directed by Joss Whedon, the show was written by Maurissa Tancharoen, Jed Whedon, Joss Whedon and Zack Whedon, with music by Jed Whedon and Joss Whedon.