sentences:  In 2004, he also won the Educational Video Center's Excellence in Community Service Award.In 2007, he received an Emmy nomination for Exceptional Merit in Documentary Filmmaking as a producer of "" that aired on PBS series "The American Experience".On May 4, 2011, Nelson and his film "Freedom Riders" were featured on "The Oprah Winfrey Show" in a special program celebrating the 50th anniversary of the Freedom Riders.