(There were a couple of technically fun things, having nothing to do with the story. Throughout the series, the narrator from the future, telling the story to his two kids has been played by Bob Saget as the main character 15 years or so from now. For the first time, Josh Radnor played himself and did the narration. And for the first time, the two kids who have been silently listening for nine years except for saying something like, “Dad!”, actually get dialogue.)
Anyway, a very smart, clever, inventive show, and I am not surprised that the finale was all that.
And speaking of How I Met Your Mother, I mentioned a couple days ago how the cast was on Inside the Actors Studio last week. For thems what would have liked to have seen it, but missed the broadcast -- here 'tis, the whole thing.
Even putting up with James Lipton, it's much fun.