I found this video in Youtube, and I think it's quite funny. They use Spanish version of Grim Fandango to teach the language. Here:
http://www.youtube.com/watch?v=0rr6mq0sszU
I think they use one of the programs of Quick & Easy to modify the game. Really interesting.
By the way, in that video you can hear the Spanish Glottis, one of my favourite performances of the game.