Admittedly only a few.
Lotus II: One horrendous Saturday afternoon, last level was a close call (think I had only 2 seconds left on the clock!).
Zool: Took a while but completed it in the end.
Golden Axe (all characters): Fairly easy.
Turrican: Like Zool it took a while.
Yo! Joe!: Quite easy.
Alien Breed: Took most of the afternoon.