Question: The actor that played King Arthur in the 1967 film "Camelot" also starred with Christopher Plumber in an action film released in what year?

Context articles: Camelot (film)
The King's Damosel
Richard Harris
The Adventures of Sir Lancelot
The Vagabond King (1956 film)
Highpoint (film)
Unidentified Flying Oddball
Dragons of Camelot
A Kid in King Arthur's Court
Michael Siberry

Camelot is a 1967 American musical comedy-drama film directed by Joshua Logan and starring Richard Harris as King Arthur, Vanessa Redgrave as Guenevere, and Franco Nero as Lancelot.
 The film is an adaptation of the homonymous musical by Alan Jay Lerner and Frederick Loewe.
 Lerner also wrote the screenplay.
The King's Damosel (also known as The King's Damsel) is a fantasy novel based on Arthurian legend by Vera Chapman first published in 1976.
 It served as the inspiration for the 1998 Warner Bros. film "Quest for Camelot".
 It is part of the "Three Damosels" trilogy, along with "The Green Knight" and "King Arthur's Daughter".
Richard St John Harris (1 October 1930 – 25 October 2002) was an Irish actor and singer.
 He appeared on stage and in many films, appearing as Frank Machin in "This Sporting Life", for which he was nominated for the Academy Award for Best Actor, King Arthur in the 1967 film "Camelot" and the subsequent 1981 revival of the show.
 He played an aristocrat and prisoner in "A Man Called Horse" (1970), a gunfighter in Clint Eastwood's Western film "Unforgiven" (1992), Emperor Marcus Aurelius in "Gladiator" (2000), and Albus Dumbledore in the first two "Harry Potter" films: "the Philosopher's Stone" (2001) and "the Chamber of Secrets" (2002).
 Harris had a number one hit in Australia and Canada and a top ten hit in the United Kingdom and United States with his 1968 recording of Jimmy Webb's song "MacArthur Park".
The Adventures of Sir Lancelot is a British television series first broadcast in 1956, produced by Sapphire Films for ITC Entertainment and screened on the ITV network.
 The series starred William Russell as the eponymous Sir Lancelot, a Knight of the Round Table in the time of King Arthur at Camelot.
The Vagabond King is a 1956 Paramount Pictures musical film adaptation of the 1925 operetta "The Vagabond King" by Rudolf Friml.
 It starred Kathryn Grayson and Oreste Kirkop, with early roles for Rita Moreno and Leslie Nielsen.
 Sir Cedric Hardwicke played a notable supporting role.
 It was Kathryn Grayson's and Walter Hampden's last movie.
 Hampden, who played King Louis XI, died more than a year before its release.
 Mary Grant designed the film's costumes.
Highpoint is a Canadian 1982 action film starring Richard Harris, Christopher Plummer and Beverly D'Angelo.
Unidentified Flying Oddball (also known as The Spaceman and King Arthur and A Spaceman in King Arthur's Court) is a 1979 film adaptation of Mark Twain's "A Connecticut Yankee in King Arthur's Court", directed by Russ Mayberry and produced by Walt Disney Productions.
 Subsequently re-released in the United States under the titles "The Spaceman and King Arthur" and "A Spaceman in King Arthur’s Court", the film starred Dennis Dugan as NASA employee Tom Trimble who unintentionally travels back in time with his look-alike android Hermes.
 Trimble’s NASA spacecraft travels faster than the speed of light, landing him and the android near King Arthur’s Camelot, where – with the aid of their 20th-century technology – they must defeat a plot by the evil Sir Mordred and Merlin to oust King Arthur from the throne.
Dragons of Camelot is a 2014 action-fantasy film directed and produced by Mark L. Lester.
 The movie stars Mark Griffin, Alex Evans, James Nitti, Selina Giles and Sandra Darnell.
 The plot describes Camelot after King Arthur dies.
 His sister, Morgana Le Fay, takes the throne and hunts down the Knights of the Round Table with three dragons that she commands.
A Kid in King Arthur's Court is a 1995 Disney family film directed by Michael Gottlieb.
 It is based on the famous Mark Twain novel "A Connecticut Yankee in King Arthur's Court" (previously filmed by Disney as "Unidentified Flying Oddball" in 1978 in which Ron Moody also played Merlin), transplanted into the twentieth century.
 Trimark later released a sequel, "A Kid in Aladdin's Palace", in 1998, but without Disney's involvement.
 Since Trimark's dissolution, the sequel is now distributed by Lions Gate Entertainment.
Michael Siberry is an Australian stage and screen actor.
 He most recently starred as King Arthur in the National Tour of "Monty Python's Spamalot".
 In September 2008, he assumed the role of King Arthur on Broadway.