I have a special memory of "Hey, You! Pikachu!" for the N64. My brother rented the console and the game so he could talk to Pikachu and took the day off school to play it all day and went full ADD and spent 8 hours shouting into the microphone "Thundershock" to get Pikachu to make sparks. When I got home I spent the next three hours hearing him repeat "thundershock, thundershock, thundershock" and I doubt he played past the first screen so he could keep talking to Pikachu.
I finally come in to see what was so amazing for him and it was quite ordinary and not worth two minutes of anyone's time.
Then suddenly Pikachu stopped doing thundershock and started walking around - possibly because he destroyed the microphone by repeated proper use - and gets retard strength, takes his deepest breath and screams "BAAAAAAAAAAAAD!!" as intensely as he could. As if it was programmed to be told he was bad or if he could feel bad for itself. He stopped playing it after that.
Lots of fond memories playing Mario Party. Specifically where I'd play DK and I'd torment an AI controlled Mario by trying to get him to have the least amount of coins and stars (0 and 0 if possible). Killing him first in mini games, failing on purpose if he were my ally. The one game you had to wind up floating bom-ombs and I managed to spam A, B so much that after everyone else managed to get only 50 yards or so, mine kept going past 120 yards. It was kind of funny as it slowed down at around 80 and then went wild and cranked out the next 30 yards quite fast. I gave myself some bad tendonitis and had to stop working out for a couple of months.
It was pretty fun but I think the SNES had the better games.