My mom's a casual gamer, playing games on Pogo after she's done work for the day.
My dad, on the other hand, plays more games that I'm interested in. When I was a little kid he used to always beat all the impossibly hard levels in games. Nowadays we usually play together. We even played through the Red Alert 3 campaign missions together. Man that was a lot of fun.
My mom actually used to be some kind of video game wizard waaaay back in the day. She apparently aced every Atari game and even kicked a lot of ass on my old Genesis. A couple of years ago I even downloaded "Gens", the Sega Genesis emulator for her computer for her birthday.