After the joy of getting a Royal Flush and then getting a Royal Flush in every suit I thought that it would be neat to get a backgammon (which is winning a game of backgammon with your opponent still having pieces on your "inner board.") It's rare . . . not Royal Flush rare, but rare.
Well, just playing around with GNU backgammon as a free hobby gave me a backgammon:
With my double at the end, I was able to pull all the pieces off for a backgammon.
Update: I have since had a "live action" backgammon against a student. He is one my favorite all time students, but not very experienced with backgammon. I always root for him to win against me, but I'll still take the backgammon.