Oh, I liked Julie Walters alright - I think she was every bit the juxtaposition of Rupert's frustrated character; but then again, I'm a slightly neurotic woman myself, so I can appreciate it better. ;)
Of course, Tupert would be strictly character play - we dare not propose anything else - and if there's any on-screen chemistry, damn, that just can't be helped! :D
Wish I saw some more of his movies, I did see Into the white (though it was a bit tough without subtitles - the Norwegian bits were tricky, heh) and Wild target, but none of the newer ones. I hate living in Mordor, you're so lucky, the Netherlands is so mundane. ;)