Red Nose Day 2017 kicks off tonight (March 24th) from its new super-sized home - the O2.
Hosted by some of the biggest names in entertainment and guest musical performances from the biggest stars in pop such as Ed Sheeran, Rag 'n' Bone Man and Emilie Sande, it will be the biggest Comic Relief charity fundraiser yet.
Here's a quick guide to the TV highlights and what you can expect across the evening.
Who are the hosts and presenters?
Red Nose Day legend Sir Lenny Henry will be joined by Jonathan Ross, Sally Phillips, Rob Beckett, Romesh Ranganathan, Warwick Davis and Miranda Hart across the evening.
Dawn French and Jennifer Saunders, Vic Reeves and Bob Mortimer, Matt Berry and Catherine Tate will also be appearing live at the O2.
Johnny Vegas and Joe Lycett will be offering an alternative take on the evening, taking over the cooking and serving duties at a local pizza restaurant for the night.
What's On: Schedule
7pm - 10pm on BBC One
Sir Lenny Henry is joined by comics and presenters Jonathan Ross, Sally Phillips, Warwick Davis, Miranda Hartt, Rob Beckett and Romesh Ranganathan.
James Corden's Carpool Karaoke - with special guests Take That
Red Nose Day Actually
Smack the Pony reunion.
Peter Kay's Car Share series 2 - First look.
All Round to Mrs Brown's - First look
Middle Class Jeremy Kyle with David Walliams
10pm - 10.30pm on BBC Two
The change of channels means a change of tone as Greg Davies takes over as host from the top of the O2... naked.
Hecklers Anonymous - Frankie Boyle, Rebecca Front and Russell Brand sketch.
Philomena Cunk: Moment of Wonder
Making Love Actually
10:35 pm -12am on BBC1
Graham Norton takes over as host with a special super-sized edition of his chat show. The late night section will also feature the world premiere of Ed Sheeran and People Just Do Nothing's new charity single.
12am - 1am on BBC
Russell Brand's Stand-Off - One hour of comedy stand-up compered by the controversial comic.
1am - 2.30am on BBC
Fantastic Beats and Where to Find Them - Jonathan Ross and new Great British Bake Off host Noel Fielding look back on 30 years of Red Nose Day.
What to Watch: Sketch highlights
Love Actually 2
The 2003 hit Love Actually is back in the name of charity for a ten minute short film. You’ll be able to find out what many of the film’s characters have been up to over the last decade and the film’s writer and director Richard Curtis promises a few surprises.
Smack the Pony
Smack The Pony stars’ Fiona Allen, Doon Mackichan and Sally Philips will be reuniting to perform a series of brand new sketches. This will be the first time the comedy trio perform together since 2003.
Let’s Sing and Dance
Let’s Sing and Dance for Comic Relief hosts Mel Giedroyc and Sue Perkins will be at Red Nose Day in anticipation of the show’s finale airing the following night.
James Corden will be returning to our shores for a special Comic Relief Car Pool Karaoke edition featuring Take That.
All Round to Mrs Brown’s
Viewers will be treated to a special preview of Brendan O’Carroll’s upcoming chat show All Round to Mrs. Brown’s.
Peter Kay’s Car Share
An exclusive preview of Peter Kay’s second series of the BAFTA winning Peter Kay's Car Share will air, and Peter will also explain how this series will directly benefit Comic Relief.
Middle Class Jeremy Kyle
In this Jeremy Kyle spoof David Walliams will be playing a middle class version of Jeremy and Jeremy will play a guest. Walliams is set to accuse Jeremy of stealing viewers from Dom Littlewood’s show Caught Red Handed.
People Just Do Nothing
Ed Sheeran will join Kurupt FM for a special edition of People Just Do Nothing. Calling himself “Ed Shearer” he’s sent to the mock West London pirate station to help them record a special track for Comic Relief.
Greg Davies’ Hot Tub Half Hour
At 10pm Comic Relief will switch over to BBC2 while the news is on. Over on BBC2 Greg Davies will be hosting his “Hot Tub Half Hour” from a secret location and promises to be “fully naked.”
Starring Rebecca Front, Russell Brand and Frankie Boyle this sketch will be based around an addict’s anonymous meeting trying to quit their addiction to heckling.
Philomena Cunk's Moments of Wonder
Philomena Cunk will show a special version of Moments of Wonder. It’s set to star Diane Morgan, feature Richard Curtis and explore the theme of charity