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;
Time's Arrow (Star Trek: The Next Generation) a time travel loop in which causal order is not upset, or, in other words, in which no strictly logical paradoxes ensue." Time's Arrow (Star Trek: The Next Generation) "Time’s Arrow" comprises the 126th and 127th episodes overall, and 26th episode of the and first episode of the of the American science fiction television series "". A two-part episode of "Star Trek: TNG", the first episode was a cliffhanger season finale for the fifth season and the second episode was the premiere for the sixth season. The second part of the episode was nominated for three Creative Arts Emmy Awards,