The mistaken identity is made even more farcial when we learn that Guy Kewney is a slim fair haired white guy whereas the other "Guy" is a stocky black guy with a French accent.
Guy Kewney, was waiting in the BBC's reception when he saw the other guy being introduced under his name. "You don't get to see my 'white, bearded, professorial' face, but you can watch the classic moment, where Goma realises that he is on air, and being mistaken for someone else. It's beyond classic: it's priceless. Watch his incredible recovery."
Fortunately, thanks to YouTube and that particular skill the internet has in digging up things which people would rather remain hidden, this video which the BBC would have preferred to have been buried in the graveyard of BBC Blunders forever is now being enjoyed by loads of people!