I am really not sure where to stand with regard to theistic evolutionists. In many respects, I feel that they are on the side of science, but sometimes it seems like the last stand of a god-of-the-gaps. I personally went through a transition from young earth creationist, to old earth creationist, to theistic evolutionist and finally relinquished the theos altogether and embraced a naturalistic explanation for the biodiversity on earth.
Theistic evolutionists are probably the best solution to solving the problem of creationism/ID, as they can show the creationists that it is possible to be a believer and also acknowledge real science. The problem that I see is that it is driving a rather impervious wedge between religion and science, allowing people to get away with placing an intellectual barrier between their critical thinking and their religion.
C.S. Lewis and Creation Science
It may boggle the minds of some evangelicals, but the famous apologist C.S. Lewis was himself a theistic evolutionist. Lewis did make some arguments against naturalistic evolution though and some deceitful YEC's have quoted those arguments to support their nonsense.