The Groove Tube is a 1974 American independent comedy film written and produced by Ken Shapiro and starring Shapiro, Richard Belzer and Chevy Chase. It features the song "Move On Up" by Curtis Mayfield in its opening scene.
Theatrical release poster
Richard Jay Belzer was an American actor, comedian, and author. He was best known for his role as BPD Detective, NYPD Detective/sergeant and investigator John Munch, whom he portrayed for 23 years in the NBC police drama series Homicide: Life on the Street, Law & Order: Special Victims Unit and several guest appearances on other series.
Belzer at the White House Correspondents Dinner in 2009