My first experience with Sega was probably within the first three years of my life. We had a MegaDrive back then (which we still own, but I replaced the RF cable with an AV one, because the RF one had a bad picture) and I think the first game I ever played was Sonic, directly followed by Revenge of Shinobi, which quite quickly gave me the creeps and I began screaming at the top of my lungs whenever I even saw so much as somebody playing the game (Zeed's laugh = O_O;;). I long got over that fear, though, and have been playing the sheet outta this game ever since.
We also have a 3 in 1 cart collection "Mega Games I", which contained Super Hang-On (one of my favourites), World Cup Italia '90 (the only game I'm not playing, because it's real bad and way too long), and Columns (also one of my favourites). I'm intending to convince my father to expand our collection...
The 'Drive has seen better days, though. I have to blow on the cartridges whenever I want to play a different game, rarely the game freezes, and the carts get pretty warm over extended play. My father said it's always been like that, though, so I guess it didn't break much over the years of not playing. Might wanna undust and clean it up someday...