I think one that's obvious to me and to some of us horror fans: Uwe Boll. Sorry, but his films are really bad to me and I just can't watch them. I consider him the Edward D. Wood Jr. of today, only he has a cult following of being hated!
At least with Wood you had a cheesy quality to them. Bolls films don't have that, or least the ones I've seen, since they're taken so seriously!