During the introduction of the judges it seemed as if Simon was tickling Paula's knee / thigh. She was totally squirming and pushing his hand away from under the table as was just laughing constantly. It was pretty cool.
I saw this too and wondered if anyone else caught this...You couldn't "see" the tickling but Paula was definitely squirming and giggling quite nicely and Simon's right hand was out of sight under the judge's table.
I am embarrassed to say I actually watch the show and have the scene on tape, but have no means of making a clip in case anyone wanted to see this...
Go to http://www.tickletheater.com/
You can register for free and in the forum section with the video files you can upload clips there. After that you can give us the link.