Dr. Wayne Dyer - DFW-OGG AA7 on June 30
Not sure if it really counts as a celebrity sighting if I had not idea who he was!
He was a very nice man who ended up sitting in the single F seat next to me when the wife of my original seat-mate made a stink about being separated from her beloved. Dr. Dyer and another passenger on the bulkhead row both moved around as the wife of my seat-mate was next to the pilot rest seat.(I was flying with my wife and son across the aisle).
Towards the end of the flight, I made small talk and asked where he lived and what he did. Simply stated that he was a writer and was coming back from speaking at an event in Toronto. Folks sitting across the other aisle heard him mention his name and recognized it.
Searched other threads and found that he gave up his seat in a similar situation on a SFO-OGG UA flight a few years back.