Switch Gates
Apple has been running these TV ads showing people who've switched from Windows to Mac. (Unfortunately, most of the people they've chosen to appear in those ads look and sound kinda geeky to me, not exactly who I'd want as spokespeople.) Now there's a cute little pastiche of those ads called "Switch Gates" (requires Flash Player 5 or higher).
In a very different vein, I also like "Sonata" on the same site (also requires Flash Player 5 or higher).