If there's one man who knows how to book guests for a chat show it's our Graham. The Irish comedian turned telly superstar (he may be no Wogan but we still LOVE his Eurovision commentaries) is taking on a special chat show marathon for Comic Relief and my, he has quite the line-up ready to go.

Martin Freeman, Jimmy Carr, James Nesbitt, Ronnie Corbett, Warwick Davis, Elle MacPherson and Keith Lemon are just some of the names slated to appear alongside the chat show host as he aims to set the Guinness World Record for Most Questions Asked on a TV Chat Show from 7pm on Thursday, March 7 on BBC Three.

Also appearing on the show will be Sarah Millican, Lee Mack, Paddy McGuinness, Heston Blumenthal, Aston Merrygold from JLS, Got To Dance judges Ashley Banjo and Kimberley Wyatt, Alex Jones, Steve Jones, Olympian turned Strictly Come Dancing champion Lewis Smith, Russell Tovey and Kirstie Allsopp.

And speaking of Sir Terry Wogan, he'll be co-hosting alongside Nick Grimshaw, while Greg James takes care of the Big Chat Backstage Party. There's even a bit of music from Example, Paloma Faith, Hurts and Laura Mvula.

"David Walliams swam the Thames, John Bishop endured a week of hell and Eddie Izzard ran marathon after marathon after marathon" said Norton. "I am hoping to join this elite group of celebrity fundraisers by doing what I do best - sitting on my backside and talking."

And if you have a burning question for any of Graham's guests, you can submit it via BBC Three's Twitter and Facebook pages.