Ant and Dec revived SM:TV Live favourite Chums as part of Saturday Night Takeaway.
Friends parody C.H.U.M.S was a regular part of SM:TV Live which aired on Saturday mornings the 90s and early 00s.
Starring and the Geordie duo alongside Cat Deeley, the sketch series saw huge star cameos including Mariah Carey.
This weekend it made a comeback as part of Saturday Night Takeaway's latest episode on Saturday 20 March.
Coming 20 years after it was last on TV, Chums returned as Cat joins Ant & Dec after being tricked in one of their undercover stunts.
"This is the reunion SM:TV fans have been calling for. It’s going to be epic," a source told The Sun newspaper.
They added: "Cat was taking part in the show for a brilliant Undercover segment anyway, so they thought they’d give the people what they want.
“Producers are already thinking of brilliant things they can do and plan lots of star cameos. It will feature as the End of the Show Show segment.”
It follows Cat reuniting with Ant & Dec for a one-off special last year.
The Story of SM:TV Live aired on ITV in December with guests including Kylie Minogue, Stephen Mulhern, Fleur East and Scarlett Moffatt.
ITV said at the time: "This celebration show will feature brand new interviews with Ant & Dec and Cat in a recreation of the SM:TV set which takes them back inside the same studio they used to broadcast from every Saturday morning.
"Covering the first three years of the show (1999-2001) - which catapulted the three friends and hosts to stardom - they reminisce on how the show came to be, how it evolved, what made it a success, their favourite segments and how it made them the presenters they are today
"Delving back through the archives, all the SM:TV favourites will be covered including Challenge Ant, Wonky Donkey, the Postbag dance, Pokemon Rap, Dec’s crush on Sabrina the Teenage Witch and of course, Chums."