Is This a Music Video or an Ad for Leopard?

Here's a music video that's making the rounds of web sites I read:

The movement away from Windows and toward the Mac is still in it's early stages, so lots of people haven't seen all of these Mac applications before. My question is, does it make more sense as a music video or an ad for Leopard?

At least they got all the Mac geeks to watch it, right? [ via 37signals SvN ]