Question: Are David Gordon Green and Larry Hagman both actors?

Context articles: J. R. Ewing
Larry Hagman
David Gordon Green
Fail Safe (1964 film)
Joe (2013 film)
Larry Hryb
Either Way (film)
Dan Hewitt Owens
Manglehorn
Three's a Crowd (1969 film)

John Ross "J. R." Ewing Jr. is a fictional character in the U.S. television series "Dallas" (1978–91) and its spin-offs, including the revived "Dallas" series (2012–14).
 The character was portrayed by Larry Hagman from the series premiere in 1978 until his death in late 2012, and Hagman was the only actor who appeared in all 357 episodes of the original series.
 As the show's most famous character, J. R. has been central to many of the series' biggest storylines.
 He is depicted as a covetous, egocentric, manipulative and amoral oil baron with psychopathic tendencies, who is constantly plotting subterfuges to plunder his foes' wealth.
Larry Martin Hagman (September 21, 1931 November 23, 2012) was an American film and television actor, director and producer best known for playing ruthless oil baron J.R. Ewing in the 1980s primetime television soap opera "Dallas" and befuddled astronaut Major Anthony "Tony" Nelson in the 1960s sitcom, "I Dream of Jeannie".
David Gordon Green (born April 9, 1975) is an American filmmaker.
 He has directed dramas such as "George Washington", "All the Real Girls", and "Snow Angels", as well as the thriller "Undertow", all of which he wrote or co-wrote.
 In 2008, he transitioned into comedy, directing the films "Pineapple Express" and "Your Highness", as well as episodes of the HBO comedy "Eastbound & Down".
 In 2013, he returned to his more dramatic roots with the independent film "Prince Avalanche".
 Since then, he has worked between the two genres, directing the films "Joe", "Manglehorn" and "Our Brand Is Crisis", and episodes of the television comedy-drama "Red Oaks", which he also executive produces.
Fail Safe is a 1964 Cold War thriller film directed by Sidney Lumet, based on the 1962 novel of the same name by Eugene Burdick and Harvey Wheeler.
 It portrays a fictional account of a nuclear crisis.
 The film features performances by actors Henry Fonda, Dan O'Herlihy, Walter Matthau and Frank Overton.
 Larry Hagman, Fritz Weaver, Dom DeLuise and Sorrell Booke appeared in early film roles.
Joe is a 2013 independent drama film directed and co-produced by David Gordon Green, co-produced by Lisa Muskat, Derrick Tseng and Christopher Woodrow and written by Gary Hawkins, adaptation from Larry Brown's 1991 novel of the same name.
 It stars Nicolas Cage and Tye Sheridan, revolving around a tormented man who hires a 15-year-old boy and protects him from his abusive father.
Lawrence "Larry" Hryb ( ), also known by his Xbox Live Gamertag "Major Nelson", is an Emmy Award–winning Director of Programming for the Microsoft gaming network Xbox Live.
 His blog "Xbox Live's Major Nelson" provides an inside look at operations at Microsoft's Xbox division.
 He picked the Gamertag "Major Nelson" after a character by the same name on the 1960s U.S. television comedy "I Dream of Jeannie" after it was recommended to him by his TiVo.
 Larry dedicated his Gamertag to Larry Hagman after his death in 2012.
 Prior to joining Microsoft in 2001, he was a former programmer and on air host with radio broadcaster Clear Channel Communications.
 Hryb graduated from Syracuse University with a degree in Television, Radio and Film production from the S.I. Newhouse School of Public Communications.
Either Way (Icelandic: Á annan veg ) is a 2011 Icelandic comedy film directed by Hafsteinn Gunnar Sigurðsson.
 Writer-director David Gordon Green and Dogfish Pictures remade "Either Way" in 2013 as "Prince Avalanche".
Dan Hewitt Owens (born July 5, 1947) is an American actor.
 He has had a film and TV career spanning five decades mostly in supporting roles.
 He has worked with many renowned directors, including David O. Russell, David Gordon Green, Jon Turteltaub, Felix Enriquez Alcala and Gilles Paquet-Brenner.
Manglehorn is a 2014 American drama film directed by David Gordon Green and written by Paul Logan.
 The film stars Al Pacino, Holly Hunter, Harmony Korine and Chris Messina.
 It was selected to compete for the Golden Lion at the 71st Venice International Film Festival.
 The film was released in theaters on June 19, 2015, by IFC Films.
Three's a Crowd was a made-for-TV movie that was originally aired by the ABC network on December 2, 1969.
 The film was a comedy directed by Harry Falk and starred Larry Hagman, who was starring in the hit TV sit-com "I Dream of Jeannie".
 Hagman plays a pilot whose wife, portrayed by E. J. Peaker, disappears and is presumed dead.
 Seven years later, she appears.
 Meantime, Hagman has met and married Jessica Walter.