Netflix doesn't offer the same programs to everyone; availability varies depending on the country where you live due to streaming agreements. One ISP in New Zealand is offering subscribers a way to get around that limitation with a new global mode. The ISP is Slingshot and global mode lets users access the US version of Netflix.
Global mode is said to be at its core a VPN that reroutes traffic through servers in other countries so people in NZ look like they are in New York, for instance. VPN use for accessing country-restricted content is frowned on.
Slingshot suggests that this service is only aimed at New Zealand homes housing international visitors. Global mode likely violates the terms of service for most streaming video providers.