I finally finished Final Fantasy VI tonight. (and then I made this collage out of screenshots of the FMV that plays at the end.) They did an excellent job reminding me all about how I murdered Shadow. "Look! Here's everyone escaping. Where's Shadow though? Not here, I guess..."
Anyway, I enjoyed the game over all. If you have't played it, I recommend you do so. I also recommend you wait for Shadow when you're fleeing the floating continent so you don't have to deal with the same guilt I have.
Look up "Final Fantasy Anthology" on whatever site you use to buy used games if you've got a playstation or playstation 2. It's FFV and FFVI, which are both great. Or I hear you can buy them on playstation network for PS3. Do it, do it, DO IT!! Older Final Fantasy games are so fun... The graphics may not be great, but they always have a certain humor about them that the later games drifted away from. You'll also finally understand references other later FF games made to the older ones if you play the older ones... DO IT!!