Ok, so the quick google spree suggest that you might be talking about Paolo Sorrentino. He made 3 movies in 2004 so let's start with this one: "Le Conseguenze dell'amore". Also... I hate you What's wrong with pop-culture?
Killjoy1987 got it, no surprise there. And yes she did leave for this dammit, sexiest dr who assistant ever in the history of evers; actually a little too distracting imo.