We continue our month-long look at the 50th anniversary of the premiere of Star Trek- September 8th, 1966. From the archives:  Denise Crosby, best known for her role as Lt.Tasha Yar in “Star Trek: The Next Generation,” about her experience in producing two documentaries on the fan experience of “Star Trek.”  “Trekkies” and “Trekkies 2” were co-produced with Crosby and Roger Nygard.