This is a bit dated, back when I was a ramper at Santa Barbara Aviation.
Met and chatted with John Travolta. At the time his pilot was Doug G., they flew a Citation and a JetStar. He used to hang around the FBO and was usually pretty down to earth.
Pamela Hensley ( Princess Ardala from Buck Rogers in the 25th Century ) and her TV producer boyfriend used to fly in from SMO in a red Beech Staggerwing. One of our CFIs was giving her dual at the time. Oh, what I would have done to give her some dual

.
Bo Derek, both at the airport and in town.
Kathy Ireland back when she had a very high pitched voice and burped like a man. There's a story there, but I'm not telling it on this board.
Andre the Giant in the terminal at Dayton. Big lumbering giant walking down the terminal in the middle of winter sweating like a pig. Ended up in first class on my flight to PIT. I thought to myself, " that guys going to die of a heart attack soon ". Unfortunately I was right.
Steve Ritchie, top scoring ace* of the USAF during Vietnam, from IAH to CLT. Nice guy, gave me an autographed photo, woohoo

. I like my Julie Clark autographed photo better.
TP
* Robin Olds was most likely the top USAF fighter pilot of Vietnam. He just didn't want a fifth or they would have sent him home.