His work includes fiction, documentary and experimental films that have been exhibited at festivals nationally and internationally. He has also collaborated with filmmakers as sound supervisor and camera operator on many films, including King Corn (2007), Kansas vs. Darwin (2007), The Only Good Indian (2009), Destination: Planet Negro (2014). These films and others have been shown on national cable networks like Showtime and Starz, and on the PBS television program Independent Lens. Bob has contributed to permanent installation works at the African Burial Ground National Monument in New York and the International Civil Rights Center and Museum in Greensboro, North Carolina.