Hopefully this topic doesn't cause any insensitivity, apologies if it does.
My parents were never really interested in games, when I was younger my dad would play Mario Kart on the SNES with me but that was about it. Saying that he's more interested in it now since technology has advanced and quite likes the flight and train simulator games, and when he visits me we'll often play Rock Band for an hour or so.
How about your parents?
*edit*
Wrong board, my bad.