Question: Which American actor, known for his role as Doctor Phlox, co-starred with David Lee Smith in the film "The Man from Earth"? 

Context paragraphs:
David Lee Smith: David Lee Smith (born September 8, 1963) is an American actor, known for his role as John Oldman, the protagonist of the 2007 science fiction film, "The Man from Earth"; he co-starred with John Billingsley and Tony Todd.  He has also appeared in other movies, including "Fight Club", and dozens of television episodes, some as a recurring character such as in "".

The Man from Earth: Holocene: The Man from Earth: Holocene is an upcoming American drama science fiction film directed by Richard Schenkman and written by Emerson Bixby, based on characters created by his father, science fiction writer Jerome Bixby.  It is a sequel to the 2007 film "The Man from Earth".  David Lee Smith returns as John Oldman, the protagonist.

John Billingsley: John Billingsley ( , born May 20, 1960<ref name="http://www.imdb.com/name/nm0082517/?ref_=fn_al_nm_1"> </ref>) is an American actor, known for his role as Doctor Phlox on the television series "".

David Stenstrom: David Lee Stenstrom (a.k.a. David Stentstrom) (born November 10, 1953) is an American actor.  He has appeared in various shows, the best known of those roles perhaps being his work with Saban, which includes being the voice of King Mondo in "Power Rangers Zeo" and Hal Stewart in "Masked Rider".  Stenstrom has also made guest appearances on many television shows throughout his career, including "General Hospital", "Doogie Howser, M.D.", "Full House" and "Murder, She Wrote".  He was also known for his role as Waldo the inventor on the Nickelodeon show, "Out of Control".

The Man from Earth: The Man from Earth is a 2007 American drama science fiction film written by Jerome Bixby and directed by Richard Schenkman.  It stars David Lee Smith as John Oldman, the protagonist.  The screenplay was conceived by Jerome Bixby in the early 1960s and completed on his deathbed in April 1998.  The film gained recognition in part for being widely distributed through Internet peer-to-peer networks, which raised its profile.  The film was later adapted by Schenkman into a stage play of the same name.

Lie with Me: Lie with Me is a Canadian drama film with graphic, unsimulated sexual content that played at the 2005 Toronto International Film Festival.  It is based on the novel of the same name by Tamara Faith Berger.  The film features Lauren Lee Smith and Eric Balfour.  Its plot concerns an outgoing, sexually aggressive young woman who meets and begins a torrid affair with an equally aggressive young man, which brings a strain on their personal lives.  The backdrop of a very hot summer in the city adds to the steamy nature of the relationship.

A Walk with Grace: A Walk with Grace is a forthcoming American "faith-based" drama film, starring David Lee Smith, Stephen Baldwin, Jason London, and Ashley Bratcher, and written and directed by Nick Kellis.

David Gallagher: David Lee Gallagher (born February 9, 1985) is an American actor.  Beginning a prolific career as a child actor and model at the age of two, Gallagher is a five-time Young Artist Award nominee and Teen Choice Award winner, best known for his role as Simon Camden on the long-running television series "7th Heaven", as well as for his feature film roles; as Mikey Ubriacco in "Look Who's Talking Now", as Kevin Harper in "Angels in the Endzone" and as Richie Rich in "Richie Rich's Christmas Wish".  Gallagher is also well known for the voice of Riku in the "Kingdom Hearts" video game series.

The Prestige (film): The Prestige is a 2006 British-American mystery thriller film directed by Christopher Nolan, from a screenplay adapted by Nolan and his brother Jonathan from Christopher Priest's 1995 novel of the same name.  Its story follows Robert Angier and Alfred Borden, rival stage magicians in London at the end of the 19th century.  Obsessed with creating the best stage illusion, they engage in competitive one-upmanship with tragic results.  The film stars Hugh Jackman as Robert Angier, Christian Bale as Alfred Borden, and David Bowie as Nikola Tesla.  It also stars Scarlett Johansson, Michael Caine, Piper Perabo, Andy Serkis, and Rebecca Hall.  The film reunites Nolan with actors Bale and Caine from "Batman Begins" and returning cinematographer Wally Pfister, production designer Nathan Crowley, film score composer David Julyan, and editor Lee Smith.

Alexander Darnes: Alexander Hanson Darnes (c.1840 - February 11, 1894) was the first African-American doctor in Jacksonville, Florida, and the second in the state.  Born into slavery in St. Augustine, Florida, as a young man he served as a valet to Edmund Kirby Smith, the son of his master, judge Joseph Lee Smith.  Darnes accompanied Smith to Texas while the career officer served in the United States Army.  During the Civil War, Smith commanded as a Confederate general.

Supporting paragraphs: David Lee Smith John Billingsley
Answer: John Billingsley