Hope this is acceptable since it was in Miami airport rather than explicitly on a BA flight etc.
Just seen Nigel Lythgoe going through international flight connections at Miami. He had a little tête-à-tête with the security people since they were running a fast track lane for first class ticket holders (which I was annoyed about as well).
I had a brief chat with him about the lack of a first class security channel - seems a jolly nice chap.