Duck Hunt on the NES at my cousin's house, then my sister and I were given a NES with Duck Hunt, Super Mario Bros and the lightgun for christmas. We went absolutely bananas, and at night when we went to bed, our parents and their friends would take over and play for hours.
We had 12-15 games for the NES, I think I only finished the SMB games through all those years, games were so hard back then! 
I kind of had the same feeling when I tried the N64 for the first time, Mario Kart 64 with 4 players was probably the most fun I ever had on a console at that point and I knew that this was something special. Then games like Turok, Mario 64, Ocarina of Time and Goldeneye made it even better, the N64 is easily the best console Nintendo ever made (in my opinion).
