A "very special episode" of Adventures in Odyssey called "Castles & Cauldrons" in which a rather disturbing stereotype of tabletop RP Gs is attacked typifies this trope: http://www.whitsend.org/vault/A000000157.cfm

Dunno how to add a new section but Adventures in Odyssey is audio drama in the great old Orseon Welles tradition and isn't always this stupid. Some of their scripts actually have merit. (this one doesn't, it's basic message is "All fantasy except Bunyan, Lewis and Tolkien and a few Christian authors that we have contracts with is evil evil evil" but whatever)

Extra Credits, on game addiction (I don't know how to strike a word) compulsion. The second part, where James speaks about his own experiences on the subject counts as is, as well as being a CMOA, CMOH and a tear jerker at the same time (this troper had more tears in his eyes than after watching Jurassic Bark)