I still pride myself in being able to memorize all the bonuses and DK coins in DKC2
I still play this every few years. I instinctively jump to the hidden bonus barrels and DK coins, but there are still a bunch that I have to think hard about where they are. The game is not finished until all 40 DK coins are collected, and I try to play
Animal Antics last.
Bramble Scramble, FTW too.
Super Mario World, of course. I spend untold hours of my childhood playing that game. A few years ago, a friend showed me the secret ending to
Cheese Bridge Area, and I was floored that there was still something new for me in that game 15 years later. The ending credits showing Torpedo Ted always confused me since I never came across him.
The Legend of Zelda: A link to the Past still get replays to this day. I still havent learned all the castle puzzles and I spend quite a bit of time getting through all of them. I usually finish the game a few pieces of heart short and it can be pretty boring finding them with nothing else to do.
F-Zero and Mario Kart, of course. My favorite music from F-Zero was from the
Big Blue track.