Simplify the following text for a Grade 11 native English-speaking person.
Original: Jonah Hill Feldstein ( born December 20 , 1983 in Mill Valley , California ) better known as , Jonah Hill is an American actor , producer , screenwriter and comedian .
Simplified: Jonah Hill Feldstein ( born December 20 , 1983 ) , best known as Jonah Hill , is an American actor , producer , screenwriter and comedian .