This episode marks the first appearance of Hardcastle's GMC 4X4 pickup truck. Prior to this episode, Hardcastle drove an old 1950s GMC pickup with a straight six engine.
The name of Hardcastle's band is The Courthouse Racketeers and Jazzmasters. The song they usually play is "When the Saints Come Marching In".
The song Mark plays on his stereo to combat Hardcastle's band is "In-A-Gadda-Da-Vida by Iron Butterfly from 1968.