Not All Dogs Go to Heaven "American Dad!" character, Avery Bullock in "Lois Kills Stewie" (season 6, episode 5), and his "Star Trek: The Next Generation" character Captain Jean-Luc Picard in "Peter's Got Woods" (season 4, episode 11); Jonathan Frakes, Michael Dorn and Marina Sirtis also appeared in "Peter's Got Woods" as their respective "Star Trek: The Next Generation" characters William Riker, Worf, and Counsellor Deanna Troi. "Not All Dogs Go to Heaven" features the entire original cast of "Star Trek: The Next Generation": Stewart as Captain Picard; Frakes as Riker; Gates McFadden as Doctor Beverly Crusher; Brent Spiner as Lieutenant Commander Data; Dorn as Worf;
Star Trek: The Next Generation also appeared in "Star Trek VI: The Undiscovered Country". All episodes of "Star Trek: The Next Generation" were made available on VHS cassettes, starting in 1991. The entire series was gradually released on VHS over the next few years during the remainder of the show's run and after the show had ended. The VHS for TNG were available on mail-order usually two episodes per VHS cassette. Paramount published all episodes on the LaserDisc format from October 1991 using an extended release schedule that concluded in May 1999. Each disc featured two episodes with Closed Captions, Digital Audio, and CX encoding.