Star Trek: The Next Generation - Unification Blu-ray Trailer HD. The Official Trailer for the Blu-ray release of the legendary 2 part episode, Unification from the television series, Star Trek: The Next Generation starring Patrick Stewart, Leonard Nimoy, Mark Leonard, Jonathan Frakes, Brent Spiner, LeVar Burton, Michael Dorn, Marina Sirtis, Gates McFadden, Wil Wheaton