I agree that "Final Fantasy: The spirits Within" was both a monumental waste of time and had nothing to do with the Final Fantasy game series. What you want to watch is "Final Fantasy VII: Advent Children". This has Cloud, Tifa, Yuffie, et al. Tifa has one major hand-to-hand fight in the move that shows off her sweet moves. Rent or buy it, you'll like it much more.
The only Final Fantasy game I'd ever played was the original one on my trusty ol' NES. So while I didn't explode with hate over The Spirits Within, I "merely" disliked it for being an overwrought mess of a story. I also had the opportunity to see Advent Children, and while I wasn't terribly impressed, I'm pretty sure that's my own shortcoming as I wasn't familiar with the FF7 source material (even having read Lightfoot's "Missing Materia" comic). To my eyes, Tifa didn't have a lot of muscle (though I thought she was noticeably more "solid" than some of the other characters), but her fight scene was pretty neat. And by the end of that movie, I learned that any monster can be beaten by literally THROWING Cloud at it.
