This episode shows an alternate ending to Grease where Danny and Sandy fly off in their car and can't get back down.

After Carrie decides to go back to school, Doug asks her what he's supposed to do while she's busy with her pep rallies and homecoming dances. Carrie tells him she's going back to college, not Rydell High (the high school featured in the film 'Grease')

Jimmy's father tells his mother that when they were young, he thought smoking made her look like Dirty Sandy at the end of the film 'Grease'.

One of Moe's new bar patrons, asks Moe if he wants to go to a "Grease sing-along" with him, but Moe turns him down.

Tim the Bear yells, "Go Grease Lightning!" when starting the car.

Mitchell tries to convince his father that he was a ladies man in high school, even though he wasn't. To prove his point, he lists several names of the girls he supposedly slept with. He tells Jay 'Betty Rizzo' was one of the girls, but she is actually a character in the musical 'Grease'.

Barney references the movie Grease, by saying, "Tell me more, tell me more, like, did he have a car?"

Penny knows that Jane is responsible for making the things on her vision board come true, but Jane doesn't know that Penny knows. So Penny tells Jane she is going to add to her vision board, saying she wants two first class tickets to Greece and 5 pounds of muscle - all by the weekend. Jane later tells Penny that she happened to find one ticket to a performance of 'Grease' on the refrigerator, and in the sink is a 5 pound bag of mussels.

The scene with the couple in black dancing at the fun house is from Grease.