I had a quick go on my cab today, first level of blazing star completed on max difficulty without taking a hit, then 1 fight in street fighter 2, and thats it turned it off.
Only when the kids come round does it get hammered non stop.
My Mame machine is basically used 100% for NBA Jam. I love playing it with my Daughter. I have it set up so that the Raspberry Pi is running 24/7. If we want to play, we just walk up to it, switch the monitor on and away we go. I don't think we have ever actually beaten the CPU but it is always fun.
When I go to Arcade Club I will be making a list of all the games I enjoyed and getting them on my Mame machine.