TOD:
I, too, am annoyed at much cell phone behavior, especially loud talking while in public, with no consideration for those nearby.
While grocery shopping I come across many people who leave their shopping carts in the middle of the aisle, oblivious to others.
No one's mentioned the charities that phone. They're exempt, of course, from the DO NOT CALL list. I so loathe these calls that I refuse to give any money to any organization that does this.