Last week I did a full days race driving out at Pukekohe courtesy of my brother. It was completely awesome. Anyway, as you leave they ask you to tell people about them, and so I am. The Ford Racing Experience is a hell of a lot of fun, and you learn a lot of about racedriving - mostly through just getting out on the track and driving (modified Ford Fiestas and Ford Kas). Heading down the back straight at speeds of close to 200k's approaching the hairpin turn is a lot of fun, although you do need to stop and remind yourself "this is NOT the xbox".
You can book through the Ford Racing Experience website, or through Red Balloon Days. It's a great day out for anyone who loves cars and/or driving.