Re: How I Met Your Mother: Barney and... (Spoilers ahead...)
In addition to the narration being clear as to the year they are in, they also referenced some real life events, such as detailing what happened to them during Hurricane Irene.
I think the series finale should be an hour long and it should be the mother telling the kids how she met their father. And she should do it entirely in that episode, just to show up Ted by getting to the point (relatively) quick.
"When I reach for the edge of the universe, I do it knowing that along some paths of cosmic discovery, there are times when, at least for now, one must be content to love the questions themselves." --Neil deGrasse Tyson