My Dad was really into PC gaming when I was a kid, he even used to program his own games using Pascal, so I remember that he and his friend Chris used to play games a lot and my older brother would sit there enthralled by it all and ended up becoming better at Transport Tycoon than either of them. But the first time that I really connected to gaming, I came downstairs one Saturday morning and found Dad playing the original Tomb Raider. I don't know what it was about it but I was just drawn in and watched him playing it for hours.
Got a Super Nintendo console for Christmas that year which was my introduction to actually gaming myself. Super Mario Bros. My brothers and I spent hours on it.