When I see an ARG for something I like, I jump all over it. My first one was for Halo 3 in 07, and now I'm working with some people at 2K on the Bioshock 2 ARG. I remember back when they released that human-avian experiment thing, I went nuts and spent a good hour playing around with that tape that was supposedly 'of' Max. I managed to get a picture during a change in lighting and with a few photoshop bits managed to see about 1/3 of 'Max's face. Unfortunately, that wasn't an ARG either...
I managed to wangle some data out of a blurry scan posted on the old blog years and years ago. Sadly, it was apparently nonsense -- and not an ARG, to boot!