The central case involved the "murder" of the study group's yam, which they were growing as an assignment for their biology class. Besides being a funny idea on its own terms, this storyline also allowed for the overdue return of Michael Kenneth Williams as Professor Kane -- who has been MIA since the first part of Season 3 -- and made room for cameos by other Greendale favorites as well, including Todd, Magnitude and, of course, the late, great Star-Burns (RIP). And hey, Michael Ironside! Credit episode writer Megan Ganz with giving everyone in the ensemble at least one killer line. Here's a round-up of each character's best quote and which group of Greendale students they belong to: the "goofballs that run around stirring up trouble" or the "eggheads who make a big deal out of it." Dun-dun!

Jeff
Egghead or Goofball? Goofball
Best Line: "We agreed to withhold that information as part of a... pinky swear with the witness."

Abed
Egghead or Goofball? Goofball
Best Line: "You're telling me after all this our suspect is going to slip away on the technicality that we're not police?"

Annie
Egghead or Goofball? Egghead
Best Line: "A passing grade?! Like a C? Why don't I just get pregnant at a bus station?"

Troy
Egghead or Goofball? Goofball
Best Line: "You don't order ketchup! It's a condiment!"

Shirley Egghead or Goofball? Egghead
Best Line: "He's right. You're not cops."

Pierce
Egghead or Goofball? Goofball
Best Line: "I fell asleep in a sunbeam."

Britta
Egghead or Goofball? Egghead
Best Line: "I can also help! As a psych major I could pro--"

Todd
Egghead or Goofball? Egghead
Best Line: "She offered to give me her only possession -- a wooden chair -- but I refused. I was only doing my duty and we had plenty of chairs at the base."

Dean Pelton
Egghead or Goofball? Goofball
Best Line: "I'm inclined to agree with the man in uniform."

Professor Kane
Egghead or Goofball? Egghead
Best Line: What else? "A man's gotta have a code." Aw yeah. (Non Wire-related runner-up: "Objection, I hate the both of you." Non Wire- related runner-up to the runner-up: "Holy crap! We are definitely dissecting pine cones next year.")

Star-Burns
Egghead or Goofball? Goofball
Best Line: "I can both see and hear you."

Fat Neil
Egghead or Goofball? Egghead
Best Line: "Vicky's yam never sprouted and I didn't want her to fail so I threw off the grading curve so she wouldn't have to go to summer school and we could finally have sex in my parents' cabin. God forgive me, I did it for love!"

Magnitude
Egghead or Goofball? Goofball
Best Line: "Hey, that's mine!" (Yes, that was even better than "Pop, pop.")

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