Tasha Yar / Commander Sela from Star Trek: The Next Generation
Denise Crosby is best known for portraying Security Chief Tasha Yar in Season One of Star Trek: The Next Generation as well as Yar’s own daughter, the half-Romulan Commander Sela, in subsequent seasons. Fun fact: She had originally been chosen to play Counsellor Deanna Troi before Gene Roddenberry switched the roles that she and Marina Sirtis had initially been given. Prior to being cast in TNG, the granddaughter of Bing Crosby already had a list of credits that included a regular stint on Days of Our Lives and a role in Eddie Murphy's debut movie "48 Hours." Her TV career has seen guest-starring parts on many fan favorite series: Lois & Clark: The New Adventures of Superman, Crossing Jordan, J.A.G., Threat Matrix, L.A. Law, The X-Files, NYPD Blue, Southland, Dexter, Bones, Mad Men, Ray Donovan and The Walking Dead. Her film work includes a starring role in "Pet Sematary" shortly after she left TNG, along with appearances in "Deep Impact," "Jackie Brown," "Desert Hearts" and many others. Aside from TNG, Crosby has also made a significant mark on the Trek universe as host and co-executive producer of the feature documentaries "Trekkies," and "Trekkies 2," which provided an often-humorous look at Star Trek fans.