For myself, although I grew up on the Atari and Nintendo, I find that I usually only end up as far back as the early 90s.
The Secret of Monkey (1990) by Tim Schaffer <3
Day of the Tentacle (1993) by Tim Schaffer <3
A hand full of NES titles ranging from Ninja Gaiden 3 to Dragon Warrior.
A lot of SNES titles os as I've come to realize, Square Softs golden age :D