Tom Cruise.
Brad Pitt
EDIT: Well, based on amount of awards, Julie Andrews.
EDIT 2: Dick Van Dyke
EDIT 3: Johnny Depp.
EDIT 4: There is no 'most famous' actor or actress but the ones above are quite famous.
There are numerous famous actors in the world. One of the most famous actors is George Clooney. Another one is Sandra Bullock.
Rob Morrow is most well known for his career as an actor. He is American and best known for playing the FBI agent Don Eppes in the television series Numbers.
Mike Bell is most well known for being an actor in the United States. He is best known for playing the role of Zan & the Gleek on different Super Friends incarnations.
Billy Banks is best known for being the most inspirational exercise instructor and the inventor of the Tae Bo exercise program. He is also a martial artist and actor.
Josh Server is a well known actor and comedian. He is best known for being the only actor that was in every season of the Nickelodeon show All That.
Ken Dodd is a famous English comedian, song writer and actor. He is most well known for his distinct appearance which includes frizzy hair and buck teeth.
Rob Morrow is most well known for his career as an actor. He is American and best known for playing the FBI agent Don Eppes in the television series Numbers.
Nestor Amarilla is the most well known actor that lived in Paraguay. He is best known for his role in 'Rosa Americana'.
Mike Bell is most well known for being an actor in the United States. He is best known for playing the role of Zan & the Gleek on different Super Friends incarnations.
Christian Meier is most well known for being an actor and singer in Latin America. Christian Meier was born in peru and is the youngest of his brothers and sisters.
Billy Connolly is probably the most well-known Glaswegian comedian/actor, but others include Robbie Coltrane and Peter Capaldi.
Pavlova is probably most well-known for her performance of Swan Lake.
First well known actor
Vhong Navarro is most well known for being a famous Filipino actor. He is also well known for other exploits in show business, such as being a comedian, dancer, and singer.
Billy Connolly is probably the most well-known Glaswegian comedian/actor, but others include Robbie Coltrane and Peter Capaldi.
Sean Hayes is well known as an actor and comedian. He is from the the United States and is probably best known for playing Jack McFarland in the sitcom Will & Grace.
Dominic West is most famous for being an English actor. Dominic is most well known for staring in The Wire, playing detective Jimmy McNulty. Dominic West was born on October 15, 1969.
Jamie Dornan is an actor who's most well known for playing Count Axel in the 2006 film Marie-Antoinette. He is also a model and has worked for the likes of Calvin Klein, Dior, and Armani.