Ridley Scott when you include the upcoming "Alien" prequel .
He has not directed any movies...YET.
David Fincher.
Alien , Aliens , Alien 3 and Alien Resurrection .
"Alien" , directed by Ridley Scott .
He is most famous for the Evil Dead movies, which he wrote and directed.
The alien is based off of a painting by H.R. Giger called Necronom IV. The figure in the painting most closely resembles a human.
There were four Alien movies made: Alien(1979), Aliens (1986), Alien 3 (1992), and Alien Resurrection (1997). The sequel "Aliens" received the best reviews.
Peter Jackson directed all three LOTR movies .
Alexander Payne directed movies such as "Citizen Ruth", "Election", and "Sidways". He also directed "About Schmidt", "Carmen", "The Descendents", and many other films or short movies.
The film was directed by Dan O'Bannon, who also directed classics such as Star Wars, Alien and Total Recall. His last film he directed in 2004 was Alien vs Predator, before his death Decemeber 17 2009.
Alien Contamination or just Contamination(as it is known by in the United Kingdom), is a 1980 film directed by Luigi Cozzi and produced by Charles Mancini.
Probably Walt Disney. The above answer could be correct, however, most of Disney's imaginative and wonderful creations were directed by, if I may say, "professional directors".