I've been writing a lot about Paul Johnson's offense recently. But sometimes, it's best to get it from the horse's mouth. (Note: It's not the wing-t, and it's not just the triple option. And, although close to the wishbone, it has evolved from it. That's why it is called the flexbone: the run & shoot doubleslot formation with some 'shoot passing concepts, and lots of option, though with plenty of other wrinkles sprinkled in too.)
UPDATE: Looks like LSU's coaches saw this video and have been reading my site. They fared far better than Georgia and the ACC.