Yesterday, as I was playing Civilization IV, I instructed my capital city to start construction of the Eiffel Tower, one of the game's World Wonders. Just a couple of turns later, a Great Engineer appeared in my capital. That in itself isn't unusual, but the engineer turned out to be
Eiffel himself! Never before have I used a Great Engineer to actually build the work he's known for; only rarely do my Great People appear anywhere close to their historical time periods, let alone in the nick of time to actually work on their own projects.
Naturally, I forgot to take a screenshot. :-(