Anyone who wants to know what it's like to debate Duane Gish should probably read Michael Shermer's "Why People Believe Weird Things", a study of various crackpot beliefs like holocaust denial, Ayn Rand's cult of personality, and creationism.
Great book. When Gish came to my college to debate, I sadly couldn't attend, but I did get a friend to take my copy to be autographed by the participants, including Gish himself.