There was a short Vertigo graphic novel called Mythos: The Final Tour; it's about a rock star who's approached by various demonic powers, trying to tempt him with succubi and so forth, and eventually
. It featured a great little cameo by Constantine, who meets the rock star in a beach condo. Constantine has tied up this hapless wretch of a man, who's wet himself with terror, and Constantine's calmly having a smoke while this horrid infernal aberration is squatting over the terrified dweeb on the floor.
Constantine explains (whispering, so the captive won't overhear) that the "devil" is just an inflatable prop he's borrowed from a special effects guy he knows in Hollywood. The whimpering prisoner is a wannabe author, who's written Constantine's unauthorized biography, and is planning on selling the movie rights for a cool million.
Whenever there's rumours of another Constantine movie, or a TV series, I have a mental image of Constantine picking up a packet of cigarettes and a demonic blow-up doll, and paying the erstwhile "creators" a visit.