I remember i saw this short while ago when it was called "Shortfilm" on the late 90's, and i tough was some of the most interesting visuals from Mexico, living in the same region i became a big fan of Ruiz work, the way he work was a big inspiration to me as a filmmaker. Totally low budget, black and white and with a regular Sony 8 video camera, this guy was doing incredible stuff!
I have the chance to see "Shortfilm" in this new 8 minute version called "Oxygen" in El Festival Cervantino in Guanajuato last year (2004), i like it, but not as much as the long version, but he keep those haunting images that have that post-apocalyptic feel, for me is really poetry.
Still Giancarlo Ruiz is one the best keep secrets from the Tijuana "Cinema Scene". I recommended his early film "IV", really amazing scary short.
Aaron Soto