Stacy Mitchhart as a teen-ager was equally devoted to basketball and guitar. He quickly realized that basketball is a tall man’s game, so he stuck with guitar.

DOC spoke with the director of “Mortal Lessons,” David Liban. He told us about his filmmaking roots and some of his favorite documentaries.

Girl Talk once worked to push the boundaries of biology research, now it’s his job to crank up the music and make people dance, sometimes until the stage breaks.