At the end of class, Mac says "Remember Michaelson's Chapter 4 and 5 for...next week." At the end of Indiana's lecture in Raiders of the Lost Ark, Indy says "Don't forget Michaelson Chapters 4 and 5 for next time."
The cast names listed on the movie poster for Bozer's movie "Love + Gun + Die" are Fox, Thompson, Glover, and Lloyd. These are the last names of four actors from Back to the Future: Michael J. Fox, Lea Thompson, Crispin Glover, and Christopher Lloyd.