Clips from Castle, Doogie Howser, M.D., Dr Horrible's Sing-Along Blog, Firefly, How I Met Your Mother, The 61st Primetime Emmy Awards, Two Guys, a Girl and a ピザ Place.
"I couldn't help but notice that the first time Barney suited-up was a whole lot like the first time Dr. Horrible suited-up for the ELE. Since they're both Neil Patrick Harris, this video was inevitable. Not ineffable -- inevitable."