I wouldn't put Smash Bros. at number 1. It's still a great game, but I prefer the likes of Ocarina of Time, Majora's Mask, and Mario 64.
Then again, not everyone is going to agree on everything, especially top 10 N64 lists.
Of course Super Smash Bros. is #1. This is a ScrewAttack video after all.
Smash is #1
...I am thinking somewhere more in the 20s tier. I mean, it was the weakest entry into that series so far, and it even felt cheaply made back then; with that ultra crappy/rushed box art and little advertising (at first). Don't get me wrong, it's still a great game and part of an even greater franchise, but it was always like #3-#5 in the fun N64 multiplayer games you could play at parties. That's just it, to, once the party/sleepovers were... well, OVER, the game became as boring as a rock. Lets face it, most of us gamed when no one was around. Mario 64 should have been #1, and smash should have been in the back-end of the list.