I do not want to tell you more in case you have not seen it yet. It is cute and the music will be stuck in your head for days. It even won a People's Choice Award for "Favorite Online Sensation". You can click here to watch it on-line or you can buy the DVD (with extras) or even get the music off of itunes.
"With My Freeze Ray I Will Stop The World"- My Freeze Ray from Dr. Horrible's Sing-Along Blog.