At the end where Roger follows Hayley and Steve, he is dressed like Hannibal Lector during the last scene of Silence of the Lambs.
Francine's blown-up license shows she was born on September 26th, 1967, making her 42 when the episode originally aired in November of 2009.
Francine's drivers license shows her weight in two different locations. Virginia is one of several states that do not even have weight displayed on their licenses.