Arlene Martel (Getty Images)
Actress Arlene Martel, best known as Spock's bride-to-be on a classic episode of "Star Trek," has died at 78, according to CNN.com
. Martel was famous in Hollywood for her ability to portray diverse characters of ethnicity, earning the nickname "The Chameleon" among casting directors. She appeared in many guest roles on television, most recently on "Brothers and Sisters" in 2010. She died due to complications from a heart attack.