Alot of the OSR D&D blogs talk about Lovecraftian influcences on D&D and getting them into their games.

Shane Magnus of Swords against the Outer Dark, is putting his money where his mouth is and producing a game heavy on the Lovecraft based off the Labyrinth Lord rules.

Still in development but reveals certain aspects of it in this post on his blog.

Sword and Sanity RPG FAQ