I used to have a old FF8, bought it second hand. It crashed on almost every cutscene.

What i did, was i borrowed my mates disk (which was also very dogdy), and when it crashed, i took out my disk, and put his in (don't turn off console, just switch disks).
Then, my mates disk crashed sometimes after i'd switched, so i just switched back. It works like a charm.

Anyway, i bought a new FF8 about four months ago, it's still in tip top condition. Actually, so are all my Final Fantasy's.