That would be the Ed Lambese Halloweenathon. I have attended the past few years. The first year was fun but on the unorganized side. Last year was better, low key and I think due to 9/11, low attendance. The area is gorgeous at that time of the year and right down the street is Lyndhurst and sleepy hollow. I believe quite a few people from this board go and it is nice to meet and catch up.
Is there a web site w/more info?