The first game he played, predictably, is Twilight Princess.
Then he popped in Wii Sports.
He has yet to really stop playing it. He's been boxing on and off for hours, while doing some baseball and tennis in between.
This is both comedic, and rather shocking. I would not have anticipated that Wii Sports would have had this much replayability, but it does. I've even gone back to it several times over the past several days, and see myself doing so for quite some time.
UBT had a blast in boxing. It was fun. I can definately see us playing it a lot. The guys definately want to beat my bowling score.