The 37-year-old actor - who stars in new movie `Somewhere` - found the process of working with the Oscar-nominated director on the film was so amazing that he is worried no other director can compare.

He explained: "I`ve been in the business my whole life. I`m an old man. I`m 37 for Christ sakes. But after working with Sofia, I`m having a hard time finding anything that is remotely as good.

"Working with Sofia was king of like the kiss of death. I told Sofia, `I hope we get to do another one because it`s very hard to find another one now after I`ve worked with you because it was such an amazing experience`."

Stephen thinks his role in `Somewhere` - in which he portrays a bad boy actor who is forced to sober up when he receives a visit from his 11-year-old daughter - is not only the best part he has ever played but is also the best role of the last five years in Hollywood.

He said: "Certainly this is the best part I`ve ever played, especially in this time when there are less and less movies about real characters and original voices and directors that have original styles.

"Sofia gave me single-handedly, the best role in the last five years for a young man. Nothing compares to it. I`ve read everything and it is the best."
sections: Celebrities