For years, needed to add the middle initial "A" to his name to avoid confusion with the
baseball pitcher Mark Langston, who had registered his name first
with the Screen Actors Guild.
Was considered for the roles of James T. Kirk and Dr. Leonard 'Bones' McCoy in Star Trek (2009).
Grew up on Staten Island, New York.
He is a Freemason.
Attended high school with Jennifer Esposito (Moore Catholic High School in Staten Island, New York).