Vernon Jordan from LGA to ORD
Bryant Gumble (and now ex-wife) LHR-JFK
But the best of all is my Dad who sat next to Lauren Bacall from LHR-JKF on the Concorde (oneworld...does that count) and he had no idea of who she was. She was throwing a series of temper tantrums throughout the flight and when the flight landed she order one of the BA reps to collect her bags bring them to her car which was waiting outside. At this point my Dad asked the BA guy, "Who was that? I sat next to her on the plane and she was a real *****!" With typical British understatement he said, "Yes she can be a bit difficult but she is one of our better customers. That was Lauren Bacall."