Here is a great interview with Ximena Cuevas, Mexican video artist. There are also many clips of her work and a funny spot of her on a talk show here.
I am getting more and more excited. My Guia Roji map has been ordered from Ebay (the most current is not available here yet) and I was led to find out that Guia Roji is a Mexico City company that has been mapping urban areas since 1928. Their only real competition is the national geography and statistics ministry. They sell huge detailed maps of the city, too. They are really expensive, but if you are already saving up for my birthday and can't think of the perfect high price item...