Ah.. really classic gaming.
The Colecovision baseball that had the specific controllers was a lot of fun.. until we learned the pitch that was a strike but couldn't be hit. Then games became a challenge of who could continue to pitch that exact pitch without making a mistake.
Man the intellivision had some great games though... B-17 bomber was awesome with the voice module. Tron Deadly Discs was a marathon game if there ever was one. My friend was the best at TDD and could play for hours until it finally got crazy hard.