As you know, the premise of the show is Ted taking to his kids in 2030 about how he met their mother. Tonight at 7pm is the last episode of HIMYM, a special one hour episode where we get to find out what's happened to the characters in the years between now and then!
Expect nods to catchphrases, flashbacks to hilarious gags, reminders of characters' quirks. Also producers wanted a clean and respectful end for the fans who stuck with the show all these years.
And don't forget about a planned spin-off called "How I Met Your Dad." The actors have been cast but no air date has been released. It'll probably be in the fall as part of the 2014 Fall Pilot Season.
Read more in an article from mysa.com.