The Biophysical Society Executive Board issued the following statement regarding evolution, creationism, Intelligent Design (stealth creationism): http://www.biophysics.org/pubaffairs/evolution.pdf

From paragraph 3:
"What distinguishes scientific theories from these theological beliefs is the scientific method, which ... involves the formulation of hypotheses that can be refuted."

There are specific statements made by IDers (and other creationists) that are demonstrably false. But the general issue of ID is not science IN ANY SENSE, because it cannot possibly be falsified (refuted).