Michael Dorn (Lt. Worf) and Colm Meaney (Chief O'Brien) are only actors to appear in the finales of both The Next Generation and Deep Space Nine. Marc Alaimo (Gul Dukat), Aron Eisenberg (Nog), J.G. Hertzler (General Martok) and Mark Allen Shepherd (Morn) are the only actors, besides the regulars, to appear in both the pilot and finale of the series. This is the first of two Star Trek series finales in which Jeffrey Combs (Weyoun) appears. The second is the Enterprise finale "These Are The Voyages..." in which he plays Commander Shran.