This thread made me think a lot.
I'm a non-gamer, but I have extremely fond memories of playing some games, especially Sonic 3 & Knuckles, Spyro the dragon, and Spyro 3.
But for each of those, I also remember dozens of games I picked up that just frustrated me or seemed to have no depth, and I couldn't get into them at all. I wonder if it's just coincidence + nostalgia or whether, if I tried, I could find other games as magical as these. (If anyone wants to recommend something, I'm listening.)
Anyway, I also used to play shmups, and puzzle games, and Stunts, for the time-killing purpose, so I know exactly what >>1 is talking about there, too.