This article reminded me of something I've thought about - does any game developer use high level languages for AI or core game engine? It seems they all use C/C++ for most everything.

A few games have embedded Lua or Python for user scripting (i.e. Vampire:Bloodlines used Python for dialoges and quest creation), and a couple of games have started to require having .Net runtime installed... but does anyone know of a core game engine in high level languages, and C/C++ is only used for graphics?