I'm considering buying a wii for my parents now.
Funny story. My family purchased my dad a PS3 2 years ago for Xmas. My brothers and their families live in different states so getting together for the holidays doesn't always work out. That year we were all home for Thanksgiving so we decided, let's give him the ps3 now as an early present. My father is 65, 63 at the time, and when he opened up the PS3 he was pissed. He was saying "Why the hell did you get me that thing, i'm never going to use it" - It was great seeing him so angry over it. Long story short, I bought him Battlefield Bad Company 2 that week, hooked him up with a mic and we played some multiplayer.... he was freaking hooked. I live in NYC and my father lives in PA and I can't tell you how many times I saw him online at 2am playing battlefield. Funny stuff.
Either way, he'll probably yell at me for buying him a wii but in the long run, I can totally see him playing mario and crap like he did with us when we were kids!
I need to look on Go Hastings site for warranties on a used system. I'm worried that this thing will break in a week.