Here's an interesting thread previously on this site where the miracle is examined critically:http://www.orthodoxchristianity.net/forum/index.php/topic,6446.0.html
A thread regarding the liturgics involved with both representatives of the Armenian Patriarchate as well as the Eastern Orthodoxhttp://www.orthodoxchristianity.net/forum/index.php/topic,5756.0.html
Yet another thread:http://www.orthodoxchristianity.net/forum/index.php/topic,6012.0.html
There's others too, that will be uncovered throuhg our Serach function...
Anyway, while I have never had the unique blessing of being there for the Holy Fire, my godparents have been there. It is....humbling and remarkable.
Finally, there was a televion doccumentary about this that was on the Discovery Channel or some such network about 10 years ago. I may be archived somewhere, if you can find it.