I love cameos (who doesn't?). I had a similar surprise once watching "Conspiracy Theory" starring Mel Gibson when I suddenly realised there was Paul Simon as one of his taxi passengers. Only a split second but no doubt it was him. There were others, too, like Anthony Quinn.
Here's one of my favorite pics of Doug. I'd just gotten back from Vietnam and went with Byron Berline to Las Vegas where he was playing with Dillard and the Expedition...One of the very few times he wasn't grinning!
He was sure grinning here, with Billy Ray Lathum and Roger Bush...
I grew up in Southern California and saw the original Dillards several times. Doug was my inspiration to play banjo, as it was for people like John McEuen and Steve Martin. Years later I interviewed him in Madison, Wisconsin when he brought the Doug Dillard Band into the area. The first question to him, that surprised him, was how he had gotten the gigs in Popeye and The Rose. He said it was through Harry Dean Stanton, who was a friend both personal and musical. It is sometimes forgotten that both Doug Dillard and the Dillards (with him and without him) were central to the Folk-Rock and Country-Rock movements on the west coast. I was always gratified that I had a chance to tell him how much he meant to my musical life.