Simon Singh, Alex Kritoski and Stephen Fry

The Infinite Monkeys, Brian Cox and Robin Ince, are joined on stage by special guest Stephen Fry and science writer Simon Singh to find out whether we really are only 6 degrees of separation from anyone else? What started as an interesting psychology experiment in connectedness, back in the 1960's, has not only taken on a life of its own in popular culture, but in the last 10 years has begun to influence everything from mathematics, to engineering and even biology. Brian and Robin look at how the concept of 6 degrees has influenced a whole new field of science and whether, in this age of social network sites such as Twitter and Facebook, we are in fact, far more connected than ever before. We also find out what Robin's "Bacon" number is. Whether Brian has an "Erdos" number, and whether, like Russell Crowe, any of the panel have successfully managed to combine the two.

Producer: Alexandra Feachem.