This episode was one of the first to suggest that Lenny and Carl have an intimate relationship.
Blackboard: "I will not bite the hand that feeds me Butterfingers".
The channel BHO is a reference to the real-life television network HBO with the letters reversed.
Couch: The Simpsons come in just as two repo men take the couch away.
Comic Book Guy has two autographed pictures of Mark Hamill on his wall how he acquired them is unknown but given his obsession of pop culture he likely bought them online.