Barnes and Noble's Center Stage Book Club is currently featuring George R.R. Martin. This means fans get to ask him questions and he tries to answer as many of them as he possibly can. The main focuses for questions are the new Wild Cards book Inside Straight, writing for television, and his books (which of course mostly consists of questions about the A Song of Ice and Fire series).
If you haven't heard of Center Stage (I only first heard of it a couple of weeks ago myself), it features one author per week and gives fans the chance to converse with that author. This should be interesting, as Martin is one of my favorite authors and a master at writing complex, gray characters.