I talked about this in another thread but...
During Hurricane Wilma (2005's forgotten storm after Katrina) I went out in the thick of it. I saw a tree branch against my neighbors car and decided to help them out. While pulling it off their car a stop sign came flying at me at 80-90mph and literally came within a foot of taking my head off.
Not sure if it would have gotten hit if I didn't duck, but it was a close one.