My dad's in his early fifties, and he's played games as long as I can remember. He's got a PS3 and a Wii, with a bunch of games on both. He's always been an RPG geek, and so have I. He's finished every last goddamn Black Isle game there is.
I tried to teach him to play the first Medal of Honor when it came out, but moving and shooting wasn't his thing. Apparently it's really hard for a lot of people, I've never seen the big problem in it.
My mom.. She doesn't play anything anymore, but she used to be really into tetris when I was a toddler. Like REALLY INTO TETRIS. Like "Mom if you're not going to cook, can I have my gameboy back, to distract me from the hunger pains?" into tetris.