...Dunwich Asylum that is.
The Venture Brothers (a cartoon on Adult Swim for those unfamiliar) has never shied away from mentioning the mythos. Prior episodes have included an "Evil Dead" style Necronomicon and an appearance by Cthulhu himself. The latest episode, having aired Sunday, July 7th, has the boys intentionally having themselves to Dunwich Asylum.
The avoidance of the name "Arkham" is possibly to avoid confusion with (or lawsuits stemming from) the DC comics Asylum of the same name. Regardless of the reasoning, the name drop is always pleasant to see.