My Dad was a casual gamer, he used to play "game games", like Pool, Chess, Scrabble and some kind primitive Settler's type game.
I remember sometimes he used to come into my room at night and play Arcade Pool on my Amiga when he couldn't sleep.
He also made the first games I ever played, programming them on our old Spectrum way back in the early 80's, and he was the driving force behind our family owning computers. He bought the latest models of Spectrum when they were released because he wanted them and wanted to keep up with the market. He also acquired a lot of games for me and built up quite a library of games, so he's responsible for me becoming the gamers I am now.
My Mum on the other hand, isn't into games at all, but it is amusing handing her a controller and watching her try to play a driving game like Forza.