In "Changing Channels", Gabriel traps Sam and Dean in the TV show Dr. Sexy, M.D., and Dean guesses that Gabriel is disguised as Dr. Sexy because he's wearing the wrong shoes: "The thing that makes Dr. Sexy sexy is the fact that he wears cowboy boots. Not tennis shoes."
The Ghostfacers was the name adopted by Harry Spengler and Ed Zeddmore for their reality TV series pilot about a group of paranormal investigators who cross paths with the Winchesters in several episodes. The Ghostfacers is run out of Ed's parents' garage.