Who plays opposite Robert Downey Jr. in the film 'The Soloist' from 2009?

Explanation

The Hollywood-actor Robert Downey Jr. (born 1965) had his real break through in 1992 when he portrayed the silent film star Chaplin in the film of the same name. During the 1990s, Downey battled drug abuse and his career suffered as a result, but he managed to overcome his addiction and come back to real success. The film 'Iron Man' made him known all over the world and his role in 'Sherlock Holmes', directed by Guy Ritchie, won him further accolade. A more arty production was 'The Soloist' fro 2009, which also starred Jamie Foxx.