Dr. Robotnik's Mean Bean Machine was a blast! I remember playing it together with a friend on his GameCube. He had Sonic Mega Collection (?) so we tried some Sonic games and finally got to Dr. Robotnik's Mean Bean Machine and we started competing in 2-player mode. I think we started playing it at about 23:00ish and had to force ourselves to stop when it was 04:00 AM :D.