My all time list is huge, but I had one today
I was running by the WW2 Memorial, and there was a big crowd and a parade with a bunch of veterans in wheelchairs with lots of cheering.
The crap part was that the parade went right through my running route, and I had to leap between wheelchairs to make it through the parade. As I was leaping, there was an old decrepit looking guy in a suit and fake brown hair no more than three or four feet away.He was shaking hands with one of the wheelchair guys, and said "Congratulations, thank you for your service." After a few seconds of thinking, I realized the old guy was Bob Dole.