When Tommy (Jamie Kennedy) looks at Serena's driver's license, we see that her last name is Witt. Alicia Witt, who plays Serena, wrote her last name on it exactly like in her own signature.
The lemonade in David's hallucination with his mom keeps changing colors.
Scott Caan, Jack Black and Jamie Kennedy also appeared in Enemy of the State
Both Alicia Witt and Jeremy Sisto would go on to spend time in Dick Wolf Law & Order franchises as regulars. Alicia Witt was detective Nola Falacci on Law and Order: Criminal Intent, while Jeremy Sisto was Detective Cyrus Lupo on the on the original Law & Order.