Well, the audience was very small on Saturday, and I was in it. Right behind Bruno. For those with Iplayer, I'm wearing the shiny, purple striped tie.
I'd say there is a great extent of it being put on for the cameras. I was in the audience last year too, and on that occasion the judges had a right barney between themselves, and the moment the lights wen off them, they ceased moving (a bit like puppets in punch and judy), and when the lights go on them, they start up again.
Saturday, it struck me that Bruno and Len are very close to each other. They held hands briefly before the show started in a sort of long handshake to wish each other luck. Alesha seemed to get on well with both Bruno and Len but Craig seemed a bit out of it in a way - not part of the circle so much. But I personally think there is a LOT of play acting going on with the judges. They know the routine, all the lines and when to pipe up for maximum effect.