Blitzball is one of the best mini-games I have played ever, in fact it was a game I spent so much time on even after I got all of Wakka's upgrades from it that I literally could still pick it up and sit back down to play league after league of Blitzball.
I loved Blitzball so much I honestly would've brought an FFX Blitzball sports game spin off and admittedly I don't like sports sims. I just don't see the point in them when you can generally speaking do the sport yourself.
So lets discuss Blitzball and how awesome it is!