My parents had HBO when I was growing up, and in the early 90s when I was 5-8 years old I would watch the morning cartoons they had on before i went to school. At 7 I watched Babar and at 7:30 they had a wizard of oz cartoon for awhile and then they changed it to a pinocchio cartoon. In between the shows they would sometimes have a little 2-minute feature called "Brain Games". They would give you a question or a riddle for you to solve, then answer it and explain it. I can't remember exactly how it went or remember a specific one. I just remember it being really interesting, funny and cool! I remember at the end of the game the voice would say in a sad voice "Brain Games is now...over!" as the image on the screen would fade away.
Does anyone remember these??? I'm about to see if I can dig up anything else about it on the web.