New Zealand's singing, dancing and laughing its way toward raising vaccination rates.

A special "vaxathon" will be splashed across Kiwis TV screens from 12 to 8pm to celebrate "Super Saturday".

The national day of action is planned as a last push to get jabs into arms, with a goal to vaccinate 100,000 people.

The vaxathon — which will be fronted by celebrities and health experts — will capture the action at vaccine sites nationwide.

One of the hosts, Patrick Gower, has laughed off Heather du Plessis-Allan's concerns it will be a disaster and a bit lame.

“You are going to be proven totally, totally wrong by that because I haven't been involved in anything lame ever. And I think it’ll be the exact opposite. I think it’ll be a magical moment in New Zealand history.”

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