Wanganui street race, or Cemetery Circuit, is considered in the top 10 street circuits in the world.
Ive been a few times now, its held on boxing day, and will not disappoint if you havent seen it before.
This year Guy Martin is the head line act, He's the guy from the Closer to the edge TT 3D doco movie you might/should have seen.
heres a link to the cemetery circuit website
and a link to the bit about Guy
let me know if your keen, will have a few mates going/ hopefully riding up for a night or two