In reply to STWright:
In or near Christchurch and currently open are: Cattle Stop, Transmitter, Albert Terrace, The Cave, Gibratar. Soon to open possibly: Lyttleton, Rapaki and a few others.
Further away on the Penisula: Coffin Rock, Crystal, Fantasy Factory, Holmes Bay (good trad cracks) and quite a few others.
Then the previously mentioned Mt Somers, some trad near Timaru, and Alpine Rock in Arthurs Pass.
I like Transmitter for a quick fix from the City, some decent routes, nearly all sport.