6. Tony Hale (Professor Holly, Season 1-Beginner Pottery)
Is Tony Hale ever not great? As the pottery professor in this episode, he provides what Jeff calls the ultimate blow-off class. Theres only one rule, and that is no re-enacting of the Patrick Swayze-Demi Moore scene from the film Ghost (Ghosting as he refers to it.) He calls the students blueberries, and is infatuated with a student, Rich (I want to kiss you on the mouth, he says after Rich uses his face to mold the clay). After Jeff ghosts with Rich, he and Professory Holly clash in a hilarious scene, as Jeff sings the Righteous Brothers song from the movie on his way out, sending Holly into a fit of rage.