I don't think a lot of the hollywood stars are used to the talk show formats over here. They're used to Letterman, Leno et al where all they do is plug the film and tell a few anecdotes while the host fawns over them. Here we've got Parky asking personal in-depth questions, Graham Norton asking cheeky questions and giving them sex toys and Jonathan Ross who just plain insults them usually. Ha ha yeah get old Wossy on his case..Willis would go mad!!Its a shame Jeremy Paxman doesnt do too many celeb interviews..old Tough guy Bruce would be in floods of tears!
And Americans are rude? Maybe so, but this kind of behavior on the part of an interviewer is considered very rude. A lot of celebs do not grant interviews. I don't blame them.