I was sitting on a United DC-7 on the taxiway at Idlewild Airport (now JFK) waiting to take off to LA (9 hours) when the captain announced that we were in for a real treat - the arrival of one of the first Pan Am 707s from London - just off to the side of our plane. Like the other kids on board (I was 11) we pressed our noses against the windows, and waited... and waited... And then there were fire trucks and emergency vehicles all over the place as they laid down foam on the runway. Turns out the 707's main gear doors were frozen and they'd had to circle waiting for them to thaw before they could land, with fuel reserves really low. My first exposure to Pan Am.
I remember seeing my first 747 - Pan Am of course, parked at SFO in 1968. Awesome.
I rode on Pan Am a number of times between Seattle and London, between Frankfurt and Berlin (they were one of three airlines allowed to overfly East Germany) and between Seattle and Fairbanks, where they would ferry up for equipment/crew changes on Asia - New York services. I had my closest call to a midair collision one night in a PAA 707 flying to FAI. The southbound plane passed us around 1000 feet below and a couple thousand feet away, eliciting a rapid up/left bank on our plane's part. I had been talking with the deadheading PA pilot in the seat in front of me; after the close call I said to him, "Man, that was close."
His reply, "Closest ever for me." That from a guy with thousands of hours in his resume.
My wife recalls a PA flight from Hong Kong to Honolulu when one of the FAs dropped acid and started walking along the armrests up the aisle, singing. She was restrained.