- Music video: Appeared in Reba McEntire's video "Cathy's Clown".
- Appeared on the Unrated Director's Edition DVD of Dawn of the Dead (2004) in a special segment entitled "We Interrupt This Program" (shot to resemble a TV news program reporting on the zombie outbreaks). Boxleitner is heard as the voice of the President of the United States. His Babylon 5 (1994) co-star, Richard Biggs, plays a TV news anchorman in the same segment.
- Novel: "Frontier Earth"
- Novel: "Frontier Earth: Searcher"
- (2/12-3/12) TV commercial: "The Best Ingredient is Love" for co-advertisers You Tube and Purina Fancy Feast.
- (2012) TV commercial: "Toppik" hair thickener.