Josh Lucas has signed on for “Smart,” a biopic based on the eccentric life of GQ and Esquire magazine founder David Smart. “Smart” centers on the magazine powerhouse whose life was almost entirely consumed by his germ phobia. He and a circle of colleagues created a long string of classroom instructional films on health and hygiene. Meanwhile, he led an unorthodox personal life and was known for his womanizing and affinity for shirtless photos of himself. Lucas will star as a fictional FBI investigator who infiltrates Smart’s world. Title character has not yet been cast. Charlie Peters penned the screenplay.