BBC News 24 interviews taxi driver instead of expert
http://www.youtube.com/watch?v=pdyYe7sDlhA

This happened almost a year ago. Most of the late night shows in the US made fun of the incident.

Not only in the USA :)
But yes, I was just one year ago.

He wasn't a taxi driver, he was there at the BBC to show up for a job interview (at least according to the BBC), and yeah, it was a year ago...
http://blogoscoped.com/archive/2006-05-18.html#n19

He wasn't actually a taxi driver. He was at the BBC for an interview...

http://news.bbc.co.uk/1/hi/entertainment/4774429.stm

Still funny nevertheless.

Also...

<< The man who mistakenly appeared as an IT expert on BBC News 24 is auctioning the blue shirt he was wearing on the day he became famous for charity. >>

http://news.bbc.co.uk/1/hi/entertainment/5029244.stm

<< The man who became a celebrity after he was mistaken for an internet expert and interviewed on BBC News 24 could see a film made about his story. >>

http://news.bbc.co.uk/1/hi/entertainment/5277722.stm

There's loads more stuff about this on the BBC website – just search for [site:bbc.co.uk "guy goma"]:

http://www.google.com/search?q=site%3Abbc.co.uk+%22Guy+Goma%22