The title refers to the classic song "I've Got a Crush on You" composed by George Gershwin, with lyrics by Ira Gershwin that was used in the Broadway musicals "Treasure Girl" (1928) and "Strike Up the Band" (1930).
In this episode Clark makes use of several football metaphors to explain teamwork to Lois. In reality, Dean Cain (Clark Kent/Superman) was actually a football player until a knee injury brought a premature end to his pro football career, prompting him to switch to acting.