The UK's oldest rock group broke into the charts earlier this year. Now they are off to Hollywood to appear on America's biggest chat show.
In the recent BBC Two documentary The Great Granny Chart Invasion - part of the Power to the People series - Tim Samuels set out to make a film about how we treat old people in this country.
The Zimmers go to Hollywood
Sunday 15 July 2007
2200 BST on BBC Two
And so "The Zimmers" were "born".
With a combined age of over 3000, they became the world's oldest rock band, and took over the famous Abbey Road studios to create a cover version of The Who's classic song "My Generation".
They wanted to show that old people should not be brushed under the carpet.
The OAP rockers became an overnight sensation. Millions watched their video on YouTube.
Press from more than 50 countries clamoured to interview the band - South Korea alone dispatched three TV crews.
The Zimmers went to number 26 in the UK charts
And then the call came from Hollywood.
The Zimmers go to Hollywood follow the band as they head off to LA, to appear with Jay Leno on America's leading talk show alongside Hollywood A-lister George Clooney.
For 99-year-old care-home resident Winifred Warbuton it is her first flight since 1927.
At 90, Alf Carretta is the lead singer of The Zimmers
Winifred, Alf and Norma follow in the footsteps of the Calendar Girls, Full Monty and Billy Elliot as the latest heart-warming story from Britain taking the US by storm.
Underpinning the programme is a sense of what life is like for the 3.5 million older people who live alone in this country.
The Zimmers go to Hollywood was broadcast on Sunday 15 July 2007 at 2200 BST on BBC Two.