Abed says to Professor Sheffield "There's a path you take and a path not taken. The choice is up to you, my friend." These are lyrics from the theme song for Who's the Boss? (1984). The music that directly follows is the tune of the theme.
The label on the bottle of wine Pierce gives Jeff says "You're even more beautiful with every bottle" in Italian.
Caddyshack (1980) reference. When Jeff says to Pierce, "don't sell yourself short...." it is a reference to a line uttered by Chevy Chase's character.
Professor Garrity says, "We're not writers. We're actors. Story doesn't matter here." This is a reference to AMC Networks and the tagline "Story Matters Here," which they were using at the time this episode was originally broadcast.