The Pineapple Incident
- The Story: Back in the show's first season, Ted blacks out and wakes up with a pineapple on his nightstand, a girl he doesn't remember in his bed, and a sprained ankle. He tries unsuccessfully to piece the events of the night together.
- Where We Left Off: There were a few clues about the night throughout the following seasons, but no answers.
- Final-Season Status: In season nine, we see that Ted has assembled an entire board trying to piece together the night's events and is made fun of for his "detective skills," but he eventually gives up. We still have yet to find out any answers.