Vincent D'Onofrio was born on June 30, 1959 in Brooklyn, New York. He has not done a great deal of science fiction, and he was practically unrecognizable for most of the one movie he has starred in - playing Edgar/Bug in Edgar Suit in Men In Black opposite Tommy Lee Jones and Will Smith in 1997. He was also in The Thirteenth Floor (1999).
Leonard Whiting was born on June 30, 1950 in London, England...a stage actor, he has not done a great deal of film work. He played Dr. Frankenstein in Frankenstein, The True Story (1970), with Michael Sarrazin as the Creature. It was the first attempt to tell Mary Shelley's story as originally written (her Creature looks like a man to start with, and can speak intelligently, but starts to deteriorate as time goes on).