Idiosyncrasies of the Man at the Next Desk

There are certain things which can drive me up the wall without the person in question actually directing any of their action directly at me. And when the person in question is the person sitting next to you at the workplace, it can turn into a tormenting experience, bad enough for you to want to quit!
What does this guy do which annoys me?

• He digs his nose with vengeance seated at his desk atleast 3 times a day, and then proceeds to continue his work (read typing, writing, etc.) without washing his fingers. This makes my stomach turn inside out each time because even if I am not directly looking at him, I can see this happening from the corner of my eye. But defence mechanism is to raise my hand till my forehead and cover my view of him and pretend to stroke my temples as if I have a headache. But once, he asked me to cross-check some database on his machine, and I convulsed. I quickly breezed through the document, and literally ran to the bathroom to scrub my hands with soap to get rid of the yukkiness I felt seated at his desk. Undoubtedly, the data was incorrect, and he was chided for poor quality of work turned up.

• He pushes his little finger into his ear and shakes it violently atleast once everyday. This is slightly more tolerable, but equally grotesque, since it takes no more than 5 seconds, and then hand returns to normal position.

• He also violently moves while seated in his chair giving the impression that he is jerking off. It doesn't help that his hand is placed under the table
  

Let your imagination take over ;)