10 Days Out: Dec. 30-Jan. 8
See the "Back to the Future" trilogies starting at 1 p.m. Jan. 8 at the Sheldon Theatre, when Marty McFly (Michael J. Fox) and Doc Brown (Christopher Lloyd) travel back to 1955. Marty interferes with the meeting of his parents, so he may cease to exist.
"Back to the Future II" features Marty in 2015 when he discovers he must again go back to 1955 to prevent disastrous changes -- this time to 1985.