Terry Pratchett’s: Moving Pictures.  

The alchemists of the Discworld have invented moving pictures. Many hopefuls are drawn by the siren call of Holy Wood, home of the fledgling "clicks" industry - among them Victor Tugelbend, a dropout from Ankh-Morpork's Unseen University and Theda "Ginger" Withel, a girl "from a little town you never ever heard of", and the Discworld's most infamous salesman, Cut-Me-Own-Throat Dibbler, who introduces commerce to the equation and becomes a successful producer. The business of making movies grows rapidly, and eventually Victor and Ginger become real stars, thanks to the help of Gaspode the sentient dog (who also develops a manager-client relationship with Laddie, who everybody considers to be the real Wonder Dog, although in fact is very simple-minded). Holy Wood for a while becomes an effervescent place full of humans, dwarfs, alchemists, demons (which essentially constitute the main technological device to make movies), and trolls (among whom is Detritus) all living in harmony.