A lot of people rag on the 64 but I thought it was a pretty decent system. Better than the gamecube and wii, but not as good as the snes. Dunno if I liked ps1 or 64 more though, they both have their gems.
Some games I liked on the 64 were the Goemon games (I prefer Mystical Ninja 64 to OoT, and the music to MN64 is incredible. My weeabooism started at a young age...), BLAST CORPS!, Mario Party 2, Snowboard Kids, Mischief Makers, JET FORCE GEMINI, Majora's Mask, Mario kart 64, Perfect Dark, and probably a few others I'm forgetting.
I used to have so many good times with my friends in mario kart 64, mario party, perfect dark, and smash bros it wasn't even funny haha.