Rugby has featured heavily in New Zealand's legend - from Greg McGee's Foreskin's lament and Lloyd Jones' Book of Fame to feature films about Richie McCaw and Dan Carter, and TV docudramas Jonah and The Kick. Now, it's the subject of that rare thing, a prime-time TV family drama series. Head High is about to hit the screen on TV 3. Lynn Freeman talks with writer and director Tim Worrall about the dramatic possibilities of our national game.