Question: Spaceballs is a 1987 American comic science fiction film co-written, produced and directed by Mel Brooks, the film also features which American actor, businessman, and animal welfare advocate, best known for his role as patriarch Tom Bradford on the ABC television comedy-drama "Eight Is Enough"?

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Leo Grillo: Leo Francis Grillo, Jr. (born 1948) is an American film actor, producer and animal welfare activist.  He is best known for founding Dedication and Everlasting Love to Animals Rescue (D.E.L.T.A. Rescue), an animal welfare organization based in Acton, California.  The not-for-profit organization was incorporated in 1981.  The refuge has grown to become the largest care-for-life animal sanctuary of its type in the world.

Alexandra Bastedo: Alexandra Lendon Bastedo (9 March 1946 – 12 January 2014) was a British actress, best known for her role as secret agent Sharron Macready in the 1968 British espionage/science fiction adventure series "The Champions".  She has been cited as a sex symbol of the 1960s and 1970s.  Bastedo was a vegetarian and animal welfare advocate.

Dick Van Patten: Richard Vincent Van Patten (December 9, 1928 – June 23, 2015) was an American actor, businessman, and animal welfare advocate, best known for his role as patriarch Tom Bradford on the ABC television comedy-drama "Eight Is Enough".

Susan Olsen: Susan Marie Olsen (born August 14, 1961) is an American former child actress, animal welfare advocate, artist, and former radio host.  Olsen is known for her role as Cindy Brady, the youngest Brady child in the sitcom "The Brady Bunch" for the full run of the show, from 1969 to 1974.

Batteries Not Included: Batteries Not Included (stylized as *batteries not included) is a 1987 American family comic science fiction film directed by Matthew Robbins about small extraterrestrial living spaceships that save an apartment block under threat from property development.  The story was originally intended to be featured in the television series "Amazing Stories", but executive producer Steven Spielberg liked the idea so much that he decided to adapt it into a film.  It is also notable for being the feature film screenwriting debut of Brad Bird, who was one of the producers of the film.

Spaceballs: The Animated Series: Spaceballs: The Animated Series, also known as Spaceballs: The Series, is an animated television series that premiered in 2008 on G4 and Canada's Super Channel, and is loosely based on the parody science fiction film "Spaceballs".  Similarly to how the original film parodied the original "Star Wars" films and the "Star Trek" universe, each episode of the series parodies a different film or other aspect of popular culture, such as the "Star Wars" prequel trilogy, "The Lord of the Rings", or the "Grand Theft Auto" video games.

Clay Myers (photographer): Clay Myers (born in Kokomo, Indiana) is an American photographer, videographer and animal welfare advocate best known for his portraits of rescued companion animals.

Spaceballs: Spaceballs is a 1987 American comic science fiction film co-written, produced and directed by Mel Brooks.  Starring Brooks, Bill Pullman, John Candy, and Rick Moranis, the film also features Daphne Zuniga, Dick Van Patten, and the voice of Joan Rivers.  In addition to Brooks in a supporting role, the film also features Brooks regulars Dom DeLuise and Rudy De Luca in cameo appearances.

Robert Prescott (actor): Robert Prescott is an American actor who has starred in various roles in film and on television.  He is best known for his role as Kent in the 1985 hit comedy film "Real Genius".  He also starred in the 1984 comedy film "Bachelor Party" as Cole Whittier, and appeared in the 1987 Mel Brooks hit comedy "Spaceballs" in a cameo as the Sand Cruiser Driver.

Mars Attacks!: Mars Attacks!  is a 1996 American comic science fiction film directed by Tim Burton, who also co-produced it with Larry J. Franco.  The screenplay, which was based on the cult trading card series of the same name, was written by Jonathan Gems.  The film features an ensemble cast consisting of Jack Nicholson (in a dual role), Glenn Close, Annette Bening, Pierce Brosnan, Danny DeVito, Martin Short, Sarah Jessica Parker, Michael J. Fox, Rod Steiger, Tom Jones, Lukas Haas, Natalie Portman, Jim Brown, Lisa Marie Smith, and Sylvia Sidney.  The film is a parody of science fiction B movies overall and includes elements of black comedy and political satire.

Supporting paragraphs: Spaceballs Dick Van Patten
Answer: Richard Vincent Van Patten