One of his latest is a 'signed' 2nd state Salem's Lot. When I saw the listing, I was incredibly upset that he would add a fake sig to that book. Turns out it's a loose signed bookplate. Still fake, obviously, but he's trying to get $1,300 for it!!
http://www.ebay.com/itm/STEPHEN-KING...1#ht_780wt_958