My personal favourite was the "Super-Dunk" basketball game (although there was very little "dunking" actually involved...). Getting into a decent rhythm was the key. There's nothing worse than getting to 150GP with a chance to "double-up" then dropping your last shot short...

I always played "Super-Dunk" on my first visit in order to get 300GP... then get the "Lifetime Golden Saucer Pass"... much better than shelling out 30'000 Gil for it next time you visited!