First of all, if you are a serious student or interested bystander of what is going on in culture and the world at large today as it pertains to Christianity in relation to culture, you need to begin staying abreast of articles on TheResurgence, a website developed in large part by Marc Driscoll of Mars Hill (Seattle) and the Acts 29 network. Secondly, I just found one of their more thorough recent posts about apologetics, and the information contained in that article are excellent! Interestingly, a lot of the works of long-dead Biblical apologists are freely available through sites like the Internet Archive and Google's book scanning efforts. The one I am most looking forward to reading some day is a work on the history of "free thought".