New Zealand fishermen caught what appears to be the world's largest giant squid:
Local news said the Mesonychoteuthis hamiltoni was about 10m (33ft) long, and was the first adult colossal squid landed intact.
One expert said calamari rings made from it would be like tractor tyres.
Link - via Boing Boing
Anyway, that being said, it is a pretty darn huge example.
What was caught in New Zealand was a Colossal Squid and these are not related to the more mythical/enigmatic Giant Squid.
There are two separate Wiki articles for each.