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.