oops. Forgot to mention that Harlan Ellison, Peter David and yours truly (me, Neil Gaiman, that is, please try to keep up) will be talking at MIT in Boston on October 6th.
Details are not really to be found at http://lsc.mit.edu/current_term/lectures.html which was all a hasty google search gave me.
I'll try and get more info up in the next day or so.