Q. When you look at the success of “Glee,” do you feel like that couldn’t have happened without things like the “Buffy” musical episode “Once More, With Feeling”?

A. No, but boy am I going to tell people that now. I’m going to run that theory up a flagpole. There’s other things like “High School Musical” that were more influential. However, let’s just say I invented television and leave it at that.

I was just thinking along these lines after watching the terrible Grey’s Anatomy musical episode. Buffy basically invented that for modern TV, and did it best.

Once More, With Feeling: Joss Whedon Revisits ‘Dr. Horrible’s Sing-Along Blog’