READ MORE: Meet the 2015 Sundance Flmmakers #52: A Star-Studded Cast Gathers for 'A Walk in the Woods' It's not a post-modern musical written by Sondheim -- it's the new trailer for "A Walk in the Woods," the new biopic comedy from director Ken Kwapis ("He’s Just Not That Into You," "The Sisterhood of the Traveling Pants," "The Office").