At the start of the episode when Dean is lying in a hospital bed, he complains to Sam about how much daytime TV sucks. This is rather a cheeky line coming from Jensen Ackles considering that he got his first real break on daytime stalwart, Days of Our Lives (1965).
Sam uses a fake credit card issued in a name of David Berkowitz.
David Berkowitz is also a name of the serial killer known as Son of Sam or 44 Caliber Killer. Later on the show, it is said that Sam Winchester likes true crime genre- especially facts and trivia about the serial killers.
This episode was beset with constant rain with most of the vehicles having to be towed because they kept getting stuck in the mud.
First and only time Sam and Dean "meet" a "Rawhead" as Dean calls it. Traits: apparently it kidnaps and eats small children and might only be killed by using an extremely high voltage of electricity (100,000 volts).