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 viewers. "TNG" premiered the week of September 28, 1987, drawing 27 million viewers, with the two-hour pilot "Encounter at Farpoint". In total, 176 episodes were made (including several two-parters), ending with the two-hour finale "" the week of May 23, 1994. The series was broadcast in first-run syndication with dates and times varying among individual television stations. Several "Star Trek" series followed "The Next Generation": "" (1993–1999), "" (1995–2001), "" (2001–2005), and "" (2017–present). The series formed the basis for the seventh through the tenth of the "Star Trek" films, and is also the setting of numerous novels, comic books,