Stars of Strictly, Star Wars, Doctor Who and East Enders lend a helping hand to children in need of help raising funds for this year's charity TV attraction.
The five-hour telethon also features footballers in England, a celebrity release of the Hit List musical quiz and songs by Louis Tomlinson and West Life.
They all hope viewers will donate to children in need, which supports 3,000 local charities and projects.
Last year, £ 50.6m was raised on the nightly appeal.
Children in Need is the official BBC charity in the UK and raises money for disadvantaged young people across the country, such as those with poverty, the handicapped or victims of abuse or neglect.
This year, comedian Tom Allen joins a cast that includes Graham Norton, Tess Daly, Mel Gidroitz, Ade Adepitan and Marvin and Rochelle Hums.
EastEnders actors Ricky Hamm (who plays Stewart Highway), Louisa Lytton (Ruby Allen), Mejie Smith (Tiffany Butcher) and Rudolf Walker (Patrick Truman) exchange Albert Square for the Strictly Come Dancing Hall for the night.
Star Wars actors Daisy Ridley and Johnny Boyga challenge New Yorker Colin Furze to build a truly working writer [vehicle that hovers], assisted by young people from projects for children in need.
Doctor Who's Ododie Whitaker also appears, and Norton gives three kids the opportunity to be on his sofa-show sofa – and the power of celebrities to tell jokes from his famous big red chair.
Meanwhile, there are special versions of Mock The Week, Crackerjack and Dragon's Den, along with performances by Michael Ball and Alfie Bo, plus the cast of Big, Tina Turner Music and Circus 1903.
England footballers Harry Caine, Marcus Rashford and Raeem Sterling have been shot in the astonishing children of England's Amputi Football Association.
In the special issue of the BBC One Hit list, pop stars appear, including rapper Vrett 32, JLS ex-singer B.B. Gill, Heidi Range from Subbabes, Nadine Coyle, Girls Aloud, Liberty X star Michelle Heaton and Anthony Costa.
Television personality Ranlan Clark-Neal has already raised more than £ 1m for the cause with his 24-hour karaoke marathon on BBC Radio 2.
Kids in Need are on BBC One at 7:30 pm GMT on November 15
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