I saw three episodes of it on the plane back from Paris.
This is the greatest show in the history of ever. I think it's absolute genius that ALL the celebrity guests play egomaniacal prick versions of themselves and that in the Extras universe no other variation of major fame exists.
I also really love the Keith Chegwin with the stupid grin on his face trying to do that one scene. http://www.youtube.com/watch?v=l2jaw2WIqOA&mode=related&search=