Yeah, but this one's a hit. In fact, Disney Channel Worldwide is restructuring it's entire management team to expand the business into other overseas markets just based on the success of Hannah Montana and High School Musical in Europe. Her album went gold in the UK with over 100,000 copies sold, and she's touring there this year.
Just google "Hannah Montana UK" and you'll find the same madness that you find here. I was down in Disney World in December and saw plenty of British kids buying up the merchandise in the stores there.
High School Musical was such a monster success in the UK (1.2 million viewers in the first showing), and they're opening the stage musical in the West End, that Hannah can't be far behind in popularity.