My GF bought me a Wii one year... I had purchased several (either for resale, or because I wanted to help out friends incl. GT folks) and she claimed one saying one of her friends wanted one. (I didn't mark up prices, ironically I took the wii's as an afterthought since the PS3 presale orders were all sold out).
I could have doubled the money and paid for one for myself, but instead I let one go to a friend, and another to my GF's "friend" ...
Biggest. Surprise. Ever.
Sadly, the system is the least used in the house, right after the PS3.