If you've ever sat down to watch How I Met Your Mother, you know the show was all about foreshadowing, callbacks, and clues related to the mother's identity. HIMYM foreshadowing was done so well, Ted himself could teach a class on the various HIMYM clues woven throughout all the running jokes in the series, which have led to fan theories and speculation across all nine seasons.
While the show had plenty of cameos, the mother's identity remained unknown until Season 9 (if you don't count the last scene in Season 8's final episode) despite plenty of hints along the way. You may think you were paying attention, but odds are you may have missed some of the show's foreshadowing.
Once you're done looking back on this great series, you can also find something new to watch with our list of shows like How I Met Your Mother.