In " Field Trip ," the fifth episode of seventh season, the gang navigates professional disappointments and ethical dilemmas while Barney obsesses over Star Wars lore. Episode Summary The episode follows three main storylines:

: Barney discovers that Nora has never seen Star Wars and doesn't like Ewoks. This sends him into a spiral, as he believes the "Ewok Line" (your age when you first see Return of the Jedi ) determines whether you find them cute or annoying—and Nora’s dislike suggests she might be older than she says. Notable Details

: Robin’s therapist, Kevin (played by Kal Penn), tells her he’s moving to Alaska to stop seeing her as a patient. He eventually confesses this was a lie to avoid the ethical conflict of his attraction to her. Despite the group’s disapproval and the clear ethical breach, the two decide to start dating.

: This episode features guest stars Martin Short as Garrison Cootes and continues Kal Penn’s arc as Kevin. Field Trip | How I Met Your Mother Wiki | Fandom

: Ted tries to inspire his Introduction to Architecture class by taking them to the GNB headquarters building site. The trip quickly falls apart when they aren't allowed past the security gate. To save face, Ted (with Barney’s "help") attempts to improvise, leading to a session where Barney makes the students question if being an architect is even a cool job.

: Observant fans noted that every meal Robin and Kevin share at the diner throughout the episode features a turkey special , highlighting their repetitive morning routine.

: Marshall starts his dream job working for environmental lawyer Garrison Cootes (Martin Short). However, he is horrified to find that Cootes is accepting tiny settlements from major polluters. Marshall eventually learns that Cootes has lost hope in the face of overwhelming corporate power, leading Marshall to try and reignite his boss's passion for the environment.