This week on TrekHeadlines Five to Watch — we count the biggest Starfleet losses in Trek history, uncover the R-rated Star Trek that almost was, and find out which 1967 episode was Leonard Nimoy's personal favorite, and why the answer will surprise you. Plus, a peek at where the franchise is headed next, and a bittersweet farewell from one of Trek's most beloved directors. Five headlines, warp speed.

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