I like the N64.

The Super Mario 64 3D world was amazing at the time. Can't forget Zelda and Mario Kart too.
Star Fox 64 was a great flying game. Perfect Dark was a great shooting game for both multiplayer and solo. It was like Goldeneye only better. I loved that you could use two controllers, one in each hand in the solo game. I wished that option was available on Star Fox. I felt like the flying experience could have been better with a second joystick.