As much of a fan I might be of Bunuel's films, I do love his Mexican films the most. He is by far my favorite director and his "El" is argueably his greatest achievement (although few have seen it). Bunuel's unparlleled understanding the male id and ego is outstanding to behold, especially within an unbridled Mexican landscape. If anyone wants to read an article I wrote on Bunuel, you can find it here:

http://www.slantmagazine.com/film/features/bunuel.html

Also, here is a link to my review of "El":

http://www.slantmagazine.com/film/archive/el.html