John Cleese is a very famous british comedian, at about the same level as Rowan Atkinson. He used to be the main character in "Faulty Towers", and he's taking over Desmond Llewelyn's role as Q in the new James Bond movies after the original actor, who has been around since the first movie, Dr No, died in a car crash.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram