How did Huey Lewis and the News and ZZ Top end up in the Back to the Future movies? What was Huey like on set? How many special effects were required to make ZZ Top look like they were from the Old West? These questions and others are finally answered in this bonus clip from the Back to the Future 25th-anniversary edition — arriving on Blu-ray, DVD, and digital download next Tuesday — which Vulture can show you exclusively today. Enjoy!