I'm not a man, married or otherwise, but that's not relevant to your situation.
Then I started noticing that every time he passes by in his car that he is staring at my place as he goes by and it just creeps me the fuck out. There's a bend in the road...muthafucka should be lookin straight ahead....what's he trying to see...??? Me in a skanky t-shirt?
Anyway, so it's the next weekend now (end of July) and he "runs" into me again which was totally manufactured by him and he asks me if I'm alone there...

I've had a pretty steady guest list upstate since July -- so someone was always coming up to "save" me....
So I think this is all over and done with but here again last weekend this bastard stops his car in front of my house and yells out to me (my house is about 75 feet from the road too...its not right there) and asks me if I was alone again. (and I was!)

. I mean WTF here???
I lied and told him I had some friends coming up..I was put on the spot and caught off guard because I couldn't believe that he was asking me this yet again. And more importantly why is he asking me....WHY?????????? I was very clear!!!!!!
He's stalking you, and he sounds dangerous. I certainly hope that you are securely locking your doors and accessible windows at all times.
So here's my question. Obviously I want this hairy little beast to leave me alone and it's a shame too as he was a good neighbor to talk to from time to time...but anyway I was thinking that if he asks me this crap again I'm going to say "what part of we're not hanging out do you not understand? If you can't comprehend this then I'll be forced to go to Jean (his wife) and have her explain this to you"...
No, don't say "we're not hanging out". He's a stalker, and you're not 12. Tell him bluntly that he is not welcome to speak to you and that if he comes onto your property ever again, you will call the police. In fact, I would alert the local police to the situation in order to expedite the restraining order process should it become necessary.
Finally, just tell his wife. Now. This asshole does not deserve further warnings. After you do that though, do not go there alone or let yourself be in any situation where you are alone and accessible to this person. Also, get some mace or pepper spray and carry it with you.