*EDIT* I dedicate this song to The Hitchhiker's Guide to the Galaxy, in recognition of the fact that the answer is 42.
Game(s): Final Fantasy III, VII, X
Song(s): Battle Themes
I didn't think I'd ever get around to this, but The Clash was so popular I couldn't resist. Verin100 wanted me to call this "The Kerplunk" or something but I prefer my title over his.
What we have here, as much as it pains me to say it, is music from Final Fantasy 7 *shudder* mixed with 10 and 3, which make up for 7. And as much as I dislike 7, I like how it fits into this song. I'm not sure whether I hold it in the same esteem I hold The Strike or The Clash, but I do like it a lot.
And before you ask, NO. No, there will NOT be a song in this series with the battle music from Final Fantasy VIII, or X-2, or XI, or XII, or the upcoming XIII - FORGET IT.