Actor and comedian Mike Epps has scored the title role in ABC's upcoming sitcom based on the classic John Candy-led, John Hughes-directed comedy "Uncle Buck". Nia Long has also joined the cast of the single-camera comedy pilot which follows Buck Russell (Epps), a childish man who learns how to be an adult by taking care of his brother Will’s kids in a very childish way. Long will play Will’s strong-willed and smart wife.