BACK TO THE FUTURE, 1985, Universal, 117 min. Director Robert Zemeckis provides a pitch-perfect combination of sharp satire and warm sentiment in this ingenious time travel comedy. Michael J. Fox plays a teenager whose mentor (Christopher Lloyd) invents a time machine that takes the kid back to the 1950s. When he inadvertently gets in the way of his teenage parents' relationship, Fox has to figure out how to get them back together to insure his own eventual existence.
BACK TO THE FUTURE PART II, 1989, Universal, 108 min. Dir. Robert Zemeckis. Michael J. Fox and Christopher Lloyd return for a sequel that spends most of its running time not before or after the original story but at the same time. As series of complex time travel complications send hero Marty McFly and partner Doc Brown back to the 1955 of the first film, after a mishap in 2015 generates a parallel universe.