I remember reading about how both Nintendo and Sony don't expect to spend a lot of money on marketing as they expect that they will sell out of their new consoles on launch day and for awhile after. There's been at least enough hype that I don't think their reasoning is altogether wrong.
That said, I was a bit surprised when I read that a Japanese person, seeing a Japanese Wii advert, had only then just seen the Wii remote for the first time, and said "how can you play complicated games like RPGs on that thing?" Well, first of all, most RPGs really only need a cancel and accept button, and next of all, the guy's been living under a rock if he plays games but somehow didn't know about the Wii at all until recently. So, yes, you're going to get some out-of-the-loop gamers like him as well as new potential gamers with advertising - their dollars are as good as anybody else's - but why spend any money to get their money when enough hardcore gamers will snatch every Wii available this Christmas?
I can't see the video above, as it's somehow flagged as inappropriate (I don't feel like making an account just to sign in to view it), so I'm pretty sure it's not Nintendo's style.
I remember seeing some advertisements before movies, like one for Donkey Kong 64, the "School's Out" Who Are You commercial, and one for Final Fantasy: Crystal Chronicles. I never saw the ones that were made for theaters actually in theaters, like the ones for Perfect Dark or Metroid Prime, but then again I don't go to movies often enough. Despite the fact that the movie industry keeps saying they're in a slump, I've always liked the idea of movie ads because it can reach non-gamers and unlike TV advertisements, they can't be tuned out.