Humphrey Bumgart-reference to actor Humphrey Bogart.
Dan Rathmoon-reference to news reporter Dan Rather.
Jet Rivers-reference to Joan Rivers, who in the late 1980's competed against Johnny Carson in the late night talk show department with The Joan Rivers Show. This led to a rift between them since she filled in as a guest host of The Tonight Show on a few occasions. The competition didn't last though as her talk show had poor ratings and was cancelled within one year.