To stick a couple of cents worth in, I think seeking hard data either way for the "Did Jesus really live?" question is going to be hard to do and, as I will try to explain, not actually what the makers of the doc are attempting to do.
No, they state exactly that in some of their first section. Perhaps you mean your personal interpretation of what they attempted?
I think most who've been around the spiritual scene for a while agree there does appear to exist a "perrenial philosophy." It's expounded through a variety of spiritual symbol systems - astrology, tarot, qabalah, and more. The Jesus myth is pretty much in line with it. This seems to me to be what the movie is trying to say here.
And such a claim is patently false. If you want, I can send you a copy of the notes I took in PDF form as well, or simply start my own thread where we can go over each and every part in socratic form.
What, perhaps thankfully, they didn't attempt to go into in the Zeitgeist Movie is Qabalah, the purported mystical basis for the Pentateuch, and to some the basis of the whole of both testaments. I refer within Qabalah especially to the studies of Gematria and Isopsephia (Alchemy also is significant but let's not go there). Because, 2000 years ago, the Hebrew and Greek languages had no separate number systems, they used the letters to double for numbers. This led to the possibility of creating whole new patterns of significance within written language, and this principle was used to "encode" mystical belief systems. As time passed and both languages picked up their own number systems, so the secondary meaning passed even further from view.
The movie covers Christianity and Judaism specifically, but it condemns all religion, even relatively new ones like Wicca, Kaballah, and so on.
As a relevant example here, with regard to Greek, the language of the New Testament, it's interesting to note that the number value of Jesus (Iesous) is 888. And of Christ (Xristos) is 1480. These add together to give 2368. The number relationship 888:1480:2368 reduces to the similar ratio 3:5:8 and (drumming, da da!)...358 in Hebrew is the number for Messiach, or Messiah. A multitude of similar number puzzles and hidden relationships like these are unveiled and studied in some Qabalah schools and, suffice to say, most people who study these things in any depth tend not to believe in a historical Jesus, though by no means exclusively so. It becomes clear with lengthy study that much of the Old and New testaments is allegorical on a host of different symbolic levels. The interested reader is drawn to "The True and Invisible Rosicrucian Order" by Dr Paul Foster Case, or to the work of Frederick Bligh-Bond and Thomas Simcox-Lea.
You perform the same fallacy that the movie does, and that has to do with language. You are attempting to connect Hebrew with Greek, even though their language systems were very different. For example, I don't know where you got "Messiach" from, but if you were seeking the Hebrew word "Moshiach" then you got the spelling wrong. The word Christ translated into Hebrew would essentially be messiah (masiah), which is often transliterated by those who are unaware of Jewish beliefs to mean the same as the Moshiach. Whoops. Let's also point out that your Greek transliterations for Jesus [Ίησους (Iēsous)] and Christ [Χριστός (Christós)] lose some important accents that actually play a significant role if someone is counting numerical value (for example, no "X" in the transliterated form of Χριστός).
Unfortunately, this is a common mistake, though, and one that Zeitgeist makes repeatedly with a whole slew of different languages.
To conclude, the study of Gematria or Isopsephia is undertaken, not as an attempt to find the most insanely abstract use of one's time, but to "bootstrap" the mind into mystical states of awareness. It starts when an individual simply, for no reason they can easily divine, becomes attracted by these things. I think Zeitgeist attempts to work in a similar way. It's not seeking to be accepted on a rational level. It's pushing out a subtle symbol system and some people find themselves bizarrely attracted, possibly accounting for the near 3 million who have viewed it since June 26 on Google alone.
Nick
Actually, the more likely reason is that human beings have an innate tendancy to see patterns in everything, whether such patters truly exist or not. Our brains work in such a manner that we can and often will continue to sufficiently increase the complexity of the pattern we are searching for to match the randomness of what we are viewing, in order to eventually find a long enough space between repetitions so as to finally and triumphantly exclaim that we have found that elusive divine pattern.
When some practice of numerology can explain to me the pattern behind Pi, then I will be impressed. Better yet, have them explain it in Base 2 form, as well. Base 10 is passe.
Just so you know, Nick, I mean nothing personal to you or your belief if you subscribe to what you posted. However, there are some serious rhetorical fallacies within just what you posted that very closely resemble many of the fallacies found in the Zeitgeist movie. If you find meaning in it, I am glad for you, but I would encourage you to invest yourself further into some conventional mathematical theory to see how mathematics alone, without mysticism or claims of religious connection, can be wonderous and poetic and, I would wager to someone like yourself who may find numbers fascinating, spiritual and creative.