H. Allen Orr in The New Yorker:
Although the movement is loosely allied with, and heavily funded by, various conservative Christian groups—and although I.D. plainly maintains that life was created—it is generally silent about the identity of the creator.
The movement’s main positive claim is that there are things in the world, most notably life, that cannot be accounted for by known natural causes and show features that, in any other context, we would attribute to intelligence. Living organisms are too complex to be explained by any natural—or, more precisely, by any mindless—process. Instead, the design inherent in organisms can be accounted for only by invoking a designer, and one who is very, very smart.
All of which puts I.D. squarely at odds with Darwin…
More here.