Well, the BBC was hoping for Guy Kewney, but due to a mix up they got the cab driver who tried his best to answer the questions (you can watch it here, his face is priceless). You can read Guy's take at his blog.
I'm just waiting for the day when the BBC mistakenly asks me for my opinion about anything.
Thanks, Will Gore.
UPDATE: Andy points us to Guy Kewney's blog, which tells us that this guy (also named Guy) isn't a cabbie, but rather an IT worker who was at the BBC for a job interview.