I'll re-post that im a natural skeptic who tends to disbeleive the conspiracy until watching and reading both sides - and usually finish up as i started.
Loose Change - there's a video out there called "Screw Loose Change" - it's on Google Video, may be on YouTube too. Loose Changed is exposed as over sensationalised rubbish.
Zeitgeist - From the occasionally reliable Wikipedia; "A feature article in The Stranger has stated the film is based solely on anecdotal evidence,[12] while others have criticized it for using unidentified, undated, and unsourced video news clips, voice-overs, quotes, and book citations without page numbers.[13][14][15] In a piece entitled "Internet idiocy: the latest pandemic", an opinion piece in the Arizona Daily Wildcat refers to the film as "internet bullshit", saying that "witty sayings, fear tactics and a cool, assertive air all enable them to convince the unwitting public of their points"[16] while another in the Irish Times called it "unhinged" and accused it of offering nothing but "surreal perversions of genuine issues and debates."[6]
In the Gauntlet, Jordyn Marcellus wrote it was ironic that the film's viewers "have blindly followed the documentary without doing their own research." He states that, though the film is "well-edited and is truly compelling", it "glosses over inconvenient facts," uses "deceptive filmmaking" and that "for a film that rails against deception, there's a lot of deception implicit in its creation."