The film stars Tom Cruise as Charlie Babbitt, Dustin Hoffman as Raymond Babbitt, and Valeria Golino as Charlie's girlfriend, Susanna. Morrow created the character of Raymond after meeting Kim Peek, a real-life savant; his characterization was based on both Peek and Bill Sackter, a good friend of Morrow who was the subject of Bill, an earlier film that Morrow wrote. Rain Man received overwhelmingly positive reviews at the time of its release, praising Hoffman's role and the wit and sophistication of the screenplay.
The film won four Oscars at the 61st Academy Awards (March 1989), including Best Picture, Best Original Screenplay, Best Director, and Best Actor in a leading role for Hoffman. Its crew received an additional four nominations. The film also won the Golden Bear at the 39th Berlin International Film Festival.