The documentary content itself starts off reasonably, with the only initial hint that this might not be a mainstream production being the emphasis put on Darwin "making up stories" as a child. The first experts to appear are professional historians. Apart from H.M.S. Beagle having the wrong number of masts (two instead of three), I didn't notice any obvious mistakes in the history, though I'm no expert.
Where it first veers into creationist territory is when the narration starts talking about Charles Lyell's influence on Darwin, with regard to uniformitarianism and "deep time," and it makes an odd assertion that the great age of the earth was a settled question in Darwin's time, unlike today. That's an odd assertion since the age of the earth is overwhelmingly confirmed by science today, and there is no scientific debate about the earth being about 4.5 billion years old. (Particularly odd was that this remark came from historian Peter Bowler, I believe, which makes me wonder about the original context of his remark.)
Several creationists and intelligent design advocates appear, though they are not identified as such. A CMI web page about the film does show who's who, but this is perhaps the most deceptive aspect of the film--using on-screen credential identification that puts recognized experts with well-established reputations on a par with relative unknowns without established reputations. For example, creationist Rob Carter is identified on-screen by where he earned his Ph.D. and as "marine biologist and geneticist," but he has no academic appointment, a scant publication record, and works for CMI. Stuart Burgess is identified as "Design & Nature, Bristol University" but he's a mechanical engineering professor at Bristol University. (UPDATE: Note that Burgess' title is, in fact, Professor of Design and Nature.) Emil Silvestru is identified by his Ph.D. and as a "geologist and speleologist," but he works full-time for CMI. Cornelius Hunter of the Discovery Institute is identified by his Ph.D. and as "molecular biophysicist and author" when he is an adjunct professor of biophysics at Biola University. That institution was originally known as the Bible Institute of Los Angeles, founded in 1908 by Lyman Stewart of Standard Oil, the guy who funded the publication and distribution of The Fundamentals: A Testimony to the Truth, from which fundamentalism gets its name. I consider this to be a deceptive equation of expertise, for which the film deserves criticism. (I gave the same criticism to "The Incredible Discovery of Noah's Ark," which used the same technique to equate creationists with little or no reputation with recognized experts.)
Creationist Emil Silvestru argues for a young earth and for the creation of geological features by catastrophic flood, though I noticed he mentioned "a flood" and not "the flood" at first, and while he mentioned the Channeled Scablands of eastern Washington as having been cut rapidly by catastrophic forces (true), he did not make the common grossly mistaken creationist assertion that this is how the Grand Canyon was formed. Silvestru also makes a polystrate tree fossil argument for rapid deposition (which may well be the case in the particular instance, but is not generally the explanation for polystrate tree fossils).
The creationism starts out fairly subtly in the film, with the remarks about the age of the earth, and at one points sets up a novel opposition between two views:
But then more standard creationism begins to emerge, with arguments that there are limits (or "apparent limits") to biological change, "as any pigeon breeder knows," and that it is impossible for evolution to generate new information. Finnish creationist biochemist Matti Leisola asserts that random mutation cannot generate new information or novel structures, and that introducing randomness "causes information to disappear" and we only see new information arise from intelligent sources. He doesn't explain what notion of information he's using, but randomness does generate new information, and new information has been observed to appear in the lab, as well as in computer simulations using genetic algorithms. Leisola goes on to say that genetic engineering originally promised the ability to make arbitrary changes to organisms, but now promises much less--we can create bacteria that produce insulin, but we can't change bacteria into anything but bacteria. I wonder what Leisola would think of this?
The film is right that a role for catastrophes has been found in geology (but not to the exclusion of mostly uniformitarian processes over very long periods of time, such as evidenced in the Grand Canyon), and for bursts of rapid biological change, as well as that biology has been found to be more complex than originally suspected. However, these discoveries, made by evolutionary scientists, have not generated support for the creationist worldview, which has been remarkable for its lack of scientific fruitfulness. This points out another failing of the film, which is its complete omission of the overwhelming evidence in support of the common ancestry of all life on earth, the evidence of the great age of the earth, and the evidence of human evolution.
At one point, the film touches on Darwin's racism, and suggests that this is because of his evolutionary views, as opposed to religion which teaches the common origins of all human beings from Adam and Eve. But both views teach common ancestry of all human beings, and there was no scarcity of racist religious believers in the mid-19th century. The Bible offers no word of condemnation of slavery and both explicitly and implicitly elevates some people over others, with the Hebrews as the "chosen people" and descriptions of God ordering genocide and the taking of slaves. The Southern Baptist Convention in the U.S. owes its existence to a split with the Northern Baptists over the issue of slavery--the Southern Baptists were for it. The dichotomy of evolution-supporting racists vs. religious creationist non-racists is a false one.
Near the end of the film, the film points out that in Darwin's time, science was just beginning to emerge from philosophy, and argues that Darwin's project was philosophical and anti-religious as much as it was scientific. Philosopher Alvin Plantinga argues onscreen that Bertrand Russell's idea that we should only believe what is established by scientific evidence is a self-undermining thesis, since it is not a scientific statement, but a piece of philosophy or even theology. I think Plantinga is probably right that we can ultimately never avoid the need for philosophical argument, but he probably underestimates the degree to which philosophy can be "naturalized" and scientific evidence brought to bear on historically philosophical problems.
The conclusion of the film states that there are opposing views of evolution and creation, and that "some suggest that they can coexist, but Darwin himself resisted this position." (I guess this is one case where the filmmakers want you to believe Darwin, in his opposition to accomodationism between evolution and religion.) The final statement of the film is that questions about how we came to be here and why we are here refuse to go away.
In all, the film is somewhat better than I expected it would be, and the film itself could be described as trying to hide its own creationism, probably in hopes of working like a Trojan horse. I hope that its effect will be to encourage the children of creationists to become interested in scientific questions, as it does depict scientific research and discovery in a largely positive light. If it does, then some of them will come to discover for themselves the facts about evolution and creationism, perhaps with the assistance of online sites like the TalkOrigins archive.
UPDATE (August 2, 2009): I've received emails from Carl Wieland of CMI and from Steve Murray, the director of the film, offering a bit of additional explanation and rebuttal. First, the remark from Peter Bowler about dispute over the age of the earth was apparently regarding the fact that there was no young-earth creationist movement at the time of Darwin like there is today, and no indication that Bowler intended to suggest that there is a scientific dispute over the age of the earth today--as commenter Physicalist suspected. Second, Steve Murray pointed out that he was aware that the ship used didn't have the same number of masts as the Beagle, but they went with what they could find close to the size of the Beagle in Tasmania, and generally tried to hide the differences in how they shot the film. Third, both disclaimed any attempt to be deceptive in choice of on-screen credentials. Finally, Steve Murray chose the on-screen credit for Cornelius Hunter based on the fact that he learned of his work and selected him to be in the film based on his books.
UPDATE (November 30, 2010): A different version of the above review, co-authored with John Lynch, will appear in vol. 30 of Reports of the National Center for Science Education and is on their website.
UPDATE (June 2, 2011): The film's claim about Darwin taking the idea of natural selection from Edward Blyth is rather decisively and completely refuted by Joel S. Schwartz, "Charles Darwin's Debt to Malthus and Edward Blyth," Journal of the History of Biology vol. 7, no. 2, Autumn 1974, pp. 301-318, online at http://www.jstor.org/stable/4330617.