James Paul Marsden (born September 18, 1973) is an American actor, singer and former Versace model.
 Marsden began his acting career guest-starring in television shows "", "Touched by an Angel," and "Party of Five".
 He gained prominence with his portrayal of Scott Summers/Cyclops in the "X-Men" film series and starred in 2006's "Superman Returns".
 Since 2016, Marsden has starred as gunslinger Teddy Flood, a sentient android, in the HBO science fiction-western thriller series "Westworld", as part of the main ensemble.
Eddie Rouse (July 2, 1954 – December 7, 2014) was an American character actor whose feature film credits included "American Gangster", "The Number 23", and "Pineapple Express".
 Rouse starred in the 2014 dramatic short film, "Rat Pack Rat", as a Sammy Davis impersonator hired to perform at a birthday party.
 He was filming the HBO television series, "Westworld", at the time of his death in 2014.
"R U Professional" is a 2009 satirical song by the American indie rock band The Mae Shi, inspired by a July 2008 outburst by actor Christian Bale on the set of "Terminator Salvation".
 Bale was filming with actress Bryce Dallas Howard when he berated director of photography, Shane Hurlbut, for walking into his line of sight.
 An audio recording of the incident appeared on website TMZ on February 2, 2009.
 The Mae Shi composed and recorded the song later in the same day, and released it the next day.
 The group stated that the piece was created to honor Bale.
 The song parodies Bale by sampling his voice from the 2008 diatribe.
 The chorus incorporates Bale's use of the word "professional" from his flare-up.
 The lyrics reference several films the actor starred in, including "Newsies", "Swing Kids", "American Psycho", and "The Dark Knight".
Edward Allen Harris (born November 28, 1950) is an American actor, producer, director, and screenwriter.
 He is known for his performances in films such as "The Right Stuff" (1983), "The Abyss" (1989), "Glengarry Glen Ross" (1992), "Apollo 13" (1995), "Nixon" (1995), "The Rock" (1996), "Absolute Power" (1997), "A Beautiful Mind" (2001), "Enemy at the Gates" (2001), "Radio" (2003), "A History of Violence" (2005), "Gone Baby Gone" (2007), "The Way Back" (2010), "Man on a Ledge" (2012), "Gravity" (2013), "Snowpiercer" (2013), and "Run All Night" (2015).
 Harris currently stars in the HBO sci-fi drama series "Westworld".
Sweetwater (released as Sweet Vengeance in the UK, Australia and New Zealand) is a 2013 American western-thriller film directed by Logan Miller and co-written with Andrew McKenzie and Noah Miller.
 The film stars Ed Harris, January Jones, Jason Isaacs, Eduardo Noriega, Stephen Root and Jason Aldean.
James Raymond Simpson (born November 21, 1975) is an American actor.
 He is known for his television work, which includes roles on "Westworld", "Person of Interest", "The Newsroom", "House of Cards", "Breakout Kings", "Psych", "It's Always Sunny in Philadelphia", "House", "", "My Name Is Earl", and "24".
Bruno Gunn (born November 8, 1968) is an American actor.
 He is best known for playing Brutus in "" and Walrus on HBO's Westworld .
Micky Shiloah is an American actor.
 He joined the fourth season of "Mistresses" on ABC as recurring character Reza.
 He can also be seen in the upcoming "Westworld", "", and the 8th season of "".
Bradford Tatum (born March 29, 1965) is an American actor, known for his role as Michael Hubbs in the cult favorite stoner film "The Stoned Age" (1994).
 He also played the bully, John Box in controversial director Victor Salva's "Powder" (1995).
 In 1999, Bradford wrote, directed, and starred in the indie film "Standing on Fishes".
 Bradford is married to actress Stacy Haiduk, whom he guest-starred with in the "seaQuest DSV" episode "Nothing but the Truth".
 In 2006, Tatum released the indie film "Salt: A Fatal Attraction", which he wrote, produced and starred in.
 This film also featured his wife, Stacy Haiduk, and his daughter, Sophia Tatum.
 In 2016, he joined the cast of the HBO series "Westworld".
Clifton Craig Collins Jr. (born June 16, 1970) is an American actor.
 He has appeared in films such as "Traffic", "Capote", "Star Trek", "Pacific Rim" and "Triple 9".
 He has also appeared in a variety of television shows, such as "The Event", "Westworld" and "Thief", the last for which he received an Emmy Award nomination in 2006.

Question: What American actor starred in both "Westworld" and "Sweetwater"? 
Answer: Ed Harris