Didn't Grim Fandango use lua?
EDIT: link: http://www.grimfandango.net/?page=articles&pagenumber=2
EDIT: link: http://www.grimfandango.net/?page=articles&pagenumber=2
(Heh... looks like Lua's also used to drive World of Warcraft. Civilization 4 uses Python, as does Battlefield 2.)