This belongs both here and the DS board, actually, but it primarily involves the Wii.
I've noticed that Nintendo products, especially the latest ones, have a viral effect on people: once they try it, they're determined to go out and get one of their own. Such is true with the DS I won in the birthday contest which was given to a friend and then promptly stolen by his mother after he made the mistake of making a reference to Animal Crossing and then had to show it to her to explain what he was talking about.
She just recently gave it back (after 2 months or so) and went out and bought her own DS, AC and a copy of Nintendogs (since she loves chihuahuas with a passion).
Yesterday, I went to Gamestop to pick up Killer 7 and Rayman DS. I asked the two clerks about Wii preorders and they both expressed excitement about the Wii, one of them saying "I can't wait!". This surprised me as I had long ago resigned myself to the notion that any game store employee would more than likely be a Sony/MS fanboy, usually MS. These two had been converted by just the promise of the Wii on the horizon.
So, in the interest of that, report occurrences of the "Nintendo Virus", be it Wii, DS or otherwise. If anyone you know has opted to buy a DS because of a game they tried or if you've seen Wii excitement in people who you didn't expect to see it in (game store employees, friends who don't game much, etc.) report it here.
I remember someone had seen a Wii ad already. Feel free to report sightings of those as well.