What I liked: Eric's 'triangle' with his hands, "He who hesitates is lost. RACHEL!", Cory and Shawn with the brain, Feeny getting the bee off Bolander's neck and getting stung, Feeny walking off with Eric at the end, the Godfather parody in a couple of the scenes, Eric freaking out in Feeny's class, especially due to the fact that Eric was not even IN the class he was interrupting.
Good episode. Had lots of funny parts and furthered character development. A+