Borat Sagdiyev is a 27-year-old Kazakh journalist on a mission across America to find Pamela Anderson. So far, so not very hilarious. However, as even the tree people of Borneo now know, Borat is also the invention of Sacha Baron Cohen and is, therefore, about as offensive a character as it's possible to be without actual physical harm being visited upon everyone he comes into contact with. In the knuckle-bitingly intense new film - "Borat: Cultural Learnings Of America for Make Benefit Glorious Nation of Kazakhstan" - every single sensitive issue of our times - racism, misogyny, terrorism, needing a poo - gets its chance to shine. Rob Fitzpatrick reports.