Just saw a commercial of the new Mazda SUV driving past a bike which appeared to be a Monster... although it sounded more like an inline 4. I'll have to watch for it again as I only caught the tail end. Sorry if repost.
They pop up everywhere, I tried to think of all the places I have seen them too. It might list Freaky Fri. with Jamie Lee Curtis, there was a great looking Monster with a cool flame job on the tank.