Galloping into theaters six months after releasing Back to the Future Part II ... and the late Dusty Hill of the band ZZ Top, and Doc’s googly-eyed fawning for Ms. Clara Clayton.

You'll likely be aware that legendary rock outfit ZZ Top provided the song "Doubleback" on the film's soundtrack, but you might've missed that the band themselves appear in the movie too.

In fact, it looks as though Francis will be recording with ZZ Top in the future as Billy Gibbons revealed ... He said, 'Listen, if I'm late getting back to the gig, make sure that Elwood, our ...