It's fairly accurate as far as similarities between deities/saviors goes, in particular the miraculous births. This is a well-sourced article on the various miraculous births from religion to religion. There is no sufficient evidence to suggest that deities and religious doctrines aren't human fabrications, and that's the general message of the first portion of the film, although it presents it in a very weak, shaky, and non-academic fashion. Some of the details the video lists are misinterpreted or simply made up, of course, and I do think the people who made the Zeitgeist videos in the first place are quite uneducated/misinformed.
now i think you underestimate someone. i actually think the exact opposite, the guys that made that move are very well educated. its well thought out propaganda ...