Buffy the Vampire Slayer: Once More, with Feeling is a classic. https://en.wikipedia.org/wiki/Once_More,_with_Feeling_(Buffy_the_Vampire_Slayer) https://en.wiki

Buffy the Vampire Slayer: Once More, with Feeling is a classic. https://en.wikipedia.org/wiki/Once_More,_with_Feeling_(Buffy_the_Vampire_Slayer) https://en.wikipedia.org/wiki/Once_More,_with_Feeling_(Buffy... Later escalated to https://en.wikipedia.org/wiki/Dr._Horrible's_Sing-Along_Blog https://en.wikipedia.org/wiki/Dr._Horrible's_Sing-Along_Blog