In case anyone else gets a kick out of creationist apologetics, Master Books/New Leaf Publishing (the guys that publish for Answers in Genesis) have a few books downloadable for free.
They periodically post links to PDF books at creationconversations.com. Here are the direct links to several of the most recent:
Frozen in Time by Michael Oard
Flood Legends by Charles Martin
Men of Science, Men of God by Henry Morris
If you sign up for their newsletter at
http://nlpg.com/freedigital then you can download
How Do We Know the Bible is True? by Ken Ham and Bodie Hodge and
Mornings and Evenings with Spurgeon by Charles Spurgeon. Both books are available in PDF, ePub and Mobi format.