Ocarina of Time, pretty sure I memorized where everything in that game is :3

Minesweeper
Delta Force 1

Spider-Man 2 and Gunstar Heroes (Less than an hour I believe) come to mind.

The souls series.

Star Fox 64

Goldeneye 007, played for hundreds of hours and eventually unlocked 007 mode- best day of my life so far :D. Pokemon in general, became a Pokemon master.

I used to re-conquer CoD 1 United Offensive and CoD 2, once a month (Timed with re-watching Band of Brothers), with pistols only (where applicable) on the hardest difficulty, just to keep myself tuned up for MP. I was _really_ good at that game.

Radiant Historia on the DS.

I could never quite get enough of that game, and I am sad it sold as poorly as it did.

THIS TWO GAMES

The Legend of Zelda A Link to the Past. Sadly don't have the time to master games anymore