I sit near a guy like that. I swear he has Tourette's.
He is from Turkey originally and sits there and blurts....
"Tomster! How's the Tomster doing?"
"Billy Boy! Whassup wit da Billster?"
He isn't addressing these co-workers directly...he is doing this while reading log files on his terminal.
I have to remind him to STFU when I go on a conference call.
ROTFL!!! (It's only funny cause he doesn't work in my office....yet)