Laurence George Luckinbill (born November 21, 1934) is an American actor, playwright and director. He has worked in television, film, and theatre, doing triple duty in the theatre by writing, directing, and starring in stage productions. He is probably best known for penning and starring in one-man shows based upon the lives of United States President Theodore Roosevelt, author Ernest Hemingway, and famous American defense attorney Clarence Darrow; starring in a one-man show based upon the life of US President Lyndon Baines Johnson; and for his portrayal of Spock's half-brother Sybok in the film Star Trek V: The Final Frontier.

For more information press the link below:

https://en.wikipedia.org/wiki/Laurence_Luckinbill