Neil Patrick Harris Sings!

Dr. Horrible's Sing-along Blog is an internet hit. All three episodes are now here via Hulu. It's 42 minutes long, for all three, but just wonderful.

An Internet musical about a lovelorn would-be supervillain and the video blog he records in his home doesn't exactly scream surefire hit, but that's just what Dr. Horrible's Sing-Along Blog became in the wee hours of July 15. Viewers clicked so fast and so furiously at drhorrible.com to see the online production — created by Buffy the Vampire Slayer auteur Joss Whedon — that demand for the debut installment crashed the site (Acts 2 and 3 followed on July 17 and 19). This sweet and sinister tale about the eponymous mad scientist (Neil Patrick Harris) who battles his archnemesis, Captain Hammer (Nathan Fillion, of Whedon's dearly departed Firefly), for the affections of the crusading civilian Penny (Felicia Day) also shot immediately to the top of the iTunes video chart, and was viewed over 2.2 million times in its first week. Not bad for a project conceived in the heat of the writers' strike and shot on a breakneck schedule this spring.

Read more about the genesis of Joss Whedon's evil genius here at EW.com
Neil Patrick Harris is also the singing Shoe Fairy on this advance video from Sesame Street. Must Watch!