I have yet to stumble across one, but I know some of the team have seen them on Cartoon Network, and . . . somewhere else, can't remember.
Well mostly the majority of tv watchers no longer watch live tv so the target consumer will not see these ads since unless they are put in online content of episodes like as in hulu, crackle, network websites, etc the people who would be interested in mmorpg's will not see these ads. It's just further proof that natural selection no longer exists.