My mom used to play Space Invaders at her brother's house back then. Until the Wii came both my parents were pretty indifferent about video games. My mom has played almost all the games I own for Wii, and has played through Super Mario Galaxy, Super Paper Mario, and Paper Mario: The Thousand-Year Door. Last night she tried out Super Mario 64 using the Classic Controller. My dad however, is harder to convince. He sticks primarily to Tennis, Bowling, and Golf in Wii Sports (and Tiger Woods 07, but disliked the crappy motion controls) but did give Mario Kart Wii a try.
My brother rarely plays games, but used to with the Atari, NES, and SNES. Currently he owns both a XBox 360 and a PS3, the former he uses half the time for DVDs and the latter was given to him as wedding present primarily for the Blu-Ray. He likes Wii Sports and WarioWare: Smooth Moves, and claims that he'll buy a Wii once supply meets demand and they are easier to find. His wife doesn't play games all that much, either.
Although she used to play SNES for a long while, my oldest sister is almost against video games, wishing that I do more with my time. I got her to play Wii Sports from time to time. Her fiancé is an avid gamer, he used to own a PS2 and plays Wii with me most of the time he visits.
My other sister and I used to play Nintendo all the time prior to the GameCube. Nowadays she focuses more on the older games on NES, SNES, and N64 if she happens to come across them from time to time. However I got her (somewhat) addicted to Wii Fit.