I still love everything I played from the N64 era, and the old tycoon games (RCT2/OpenRCT) are amazing. Oldest recent fun was finding some great sesame street games I played as a kid to share w/ my son who is just learning letters and counting. Ernie's Big Splash (1986) and Astro Grover (1984). Neither would really hold my attention today as an adult though.