On Mon, 15 Oct 2012 16:46:32 -0400, Ed Pawlowski wrote:

I see you already have many nice and helpful answers. Mine is a
little different.
Your neighbor is a jerk. Keep in mind, everything overhanging your
yard is allowed to be cut. I'd get someone with a chain saw to lop
every branch on your side of the properly line so he has a hideous
looking tree. Maybe it will fall onto his house.

Good luck with your problem.

Thats what I was thinking. That neighbor sounds like a real asshole.
By law, since it's his branches, HE must clean them up. Same as if he
dumped his garbage in your yard. I'd call the police and file a
complaint. They may refer you to a building inspector, or just threaten
the neighbor themselves. He could get a fine for refusing to clean up
his mess.