Alan Ruck plays a character named Dr. Fry. In Ferris Bueller's Day Off (1986), Alan Ruck played a character named Cameron Frye. Dr. Fry also mentions that he is still paying off the Ferrari!
In Justin's hospital room you can see a flux capacitor, which in Back to the Future (1985) is what makes time travel possible.
At the beginning of the dance competition, Stuart Stone's character is introduced as DJ Tanner, the name of the oldest daughter (played by 'Candace Cameron') on the TV series Full House (1987). In 2006, Stone and 'Jamie Kennedy' released a rap album titled "Blowin' Up" to correspond with their reality series. The album featured a song about Bob Saget who played DJ's father on "Full House".
The film's translation in Russia is "Show me the Old School".
Outside the taco place.. The logo of the of the restaurant area is a taco holding an avocado split in half. Making it look like a penis and testicles