1. - Denise Crosby, Star Trek: The Next Generation, TV, 1987-94. Tasha Yar was first planned as a Latina named Macha Hernandez, based on Vasquez in Aliens, 1986. And   Jenette   (who actually was Vasquez) auditioned - and failed!    She   was   the Enterprise-B science officer in the   Star Trek: Generations movie, 1994.