Stephen Dorff thinks working with Sofia Coppola was the "kiss of death".

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."