Who is the biggest Threadkiller?

[Sully]

In the spirit of silly offseason threads, I thought this could be interesting. I know I've been known to kill a few threads (including starting some duds), and I wondered if there were any other candidates for the title of "Threadkiller."
I don't have anyone real specific in mind, but at gunpoint I could probably think of a couple (I can think of one specifically in the DC). If we get a few ideas, this could turn into a poll.






...of course, I'm fully ready for this thread to die.