Michael J. Fox and Lea Thompson in Back to the FutureHuey Lewis was asking, so we found 'Back to the Future' stars.

It's been 25 years since Marty McFly and Dr. Brown (we're not talkin' the cream soda here) first burnt rubber in the doc's souped-up DeLorean.

You know, when they went 'Back to the Future' in 1985, then they did it again ... and again. Which star has self-released experimental films, and which one had to pass on a role in the sequel to care for an ailing parent? We answer those and other burning 'BtF' questions.