Definitely my most special gaming memory.
I was 12, and a regular EGM reader (along with other misc mags). Ultra 64 was the most important thing in my life, probably. I remember poring over early screenshots of Mario 64 and just imagining that world and how awesome it must be. And I would doodle pictures of the controller all the time - to this day I can look at an N64 controller and get that old feeling.
There's also some really nice memories of my grandma intertwined. She helped raise me, and is the single most important person in my upbringing. One day, near launch, she and I were in a Blockbuster. I turned a corner and saw a fucking N64 demo unit with Mario 64. And nobody was playing! Needless to say, I was all over it. Ugh, man, getting to hold that controller for the first time and play fucking Mario 64! My grandma was a saint, I don't remember exactly how much time we spent there but she let me play for so long.
I mentioned I was a regular EGM reader, so I knew full well when launch day was. Grandma knew consoles sell out, so she picked one up for me the day of. Of course I begged to open it and play Mario, just for one day! And she actually let me. And I swear, I didn't throw a tantrum to get it, it wasn't 'fine, you little shit, just shut up!' I know it must seem like she just totally caved, but opening a Christmas present and playing with it in September was big even for her. She knew how long I had been obsessing over it, but she can't really have understood how important and exciting it was in terms of being a gamer. I will always remember how grateful I was (and am).