According the MSNBC report on the Dover ID case:
Miller also challenged the accuracy of "Of Pandas and People" and said it almost entirely omits any discussion of what causes extinction. If nearly all original species are extinct, he said, the intelligent-design creator was not very intelligent.
Theists should take note of this. Miller also believes that God created the cosmos and not only endowed it with its laws but also sustains them (so evolution can do its "random and undirected" thing). Since those laws are responsible for this vast extinction, to be consistent, one would also expect Miller to think that God did a poor job of designing them.