Sega Genesis and Nintendo 64 were both a big part of my childhood. When I started going to the YMCA in kindergarten they had a Sega Genesis and I loved it. I would play Sonic games for as long as I could. Everybody had a time limit for playing, but I would get people to give me their time.
I didn't get a Sega Genesis for myself until much later though. My first game console was actually N64. Banjo and Kazooie, Banjo Tooie, F-Zero X, Duke Nukem, and of course, Mario Kart were some of my favorites. Thinking about this kind of makes me want to play some of them again.