The Concerning Storyline That Was Never Fully Resolved On Bones

In the Season 4 episode "The Critic in the Cabernet," Brennen announces that she wants to have a baby, a decision that comes as a shock to everyone at the Jeffersonian. Even more surprising is that she wants Booth to be her sperm donor, a contribution that the agent is naturally apprehensive about. It's beyond clear that the pair have feelings for each other at this point, but Booth agrees to donate a sample despite his reservations. His anxiety ultimately manifests as a hallucination of Stewie Griffin (Seth MacFarlane) from "Family Guy." Stewie even follows Booth into an interrogation, which finally alerts Brennan that something's wrong.

This isn't a one time occurrence. After being kidnapped by the Gravedigger (Deirdre Lovejoy) earlier in the season, Booth imagined that he was speaking with an old friend from the military who died. An MRI shows that he has a benign brain tumor. Under anesthesia, Booth has an elaborate dream where he and Brennan are married night club owners, but when he wakes up he seemingly can't remember who she is. It's a dramatic conclusion to the season, although it doesn't amount to much.

When Season 5 picks up a few weeks later, Booth is pretty much back to normal. His memory loss is never mentioned again, even though it clearly upset Brennan. It's one of the show's more ridiculous storylines, managing to negate an interesting narrative without advancing the plot in any way.