Barbas is a quest related dog. I am sure many of you heard about him.
The problem i am having is that the damn dog doesnt know what personal space is.
I sneak.. and the sneak icon doesnt tell me i am sneaking because barbas is looking at me.
I cant pickpocket because barbas is pushing me into plain view constantly.
I cant pick up stuff because barbas keeps pushing me around making me pick up crappy items i dont want.

I told barbas to stop following me, and he still follows me.

After barbas got me killed a few times i threw him of the throat of the world.
(Payback is a "stitch")
And ive never seen him again.

That sums it up.

I did this quest. What do you mean he's pushing you to pick up unwanted items? That makes no sense. I didn't have the problems you are mantioning.

I have Barabs as a follower now, he is the most annoying follower yet. I cleared a cave and exited out on to a ledge - Brabas pushes me off by constantly walking into me. Whenever I am trying to pickup items he is pushing me around the room.

Yep Barbas is an idiot, he sidles right up to you and pushes you, he provokes enemies you're trying to avoid. Even if you keep a pretty good distance from them, he runs down to them and starts a fight. When I followed him to the cave he's suppose to take you to he walked around Helgen in circles until I left him for a while, then he finally made it to the cave on his own. All I have to say is what I did to him at the end of that quest he deserved.