While you're looking at hurricane coincidences, don't forget the nearly-identical landfall points of Frances and Jeanne (2004), and Ivan (2004) and Dennis (2005).

I haven't seen anyone calculate the chance of hurricanes hitting that close together in time and space, but it's got to be pretty low.

Not necessarily.

Some hurricane guru was on CNN last month, and a caller asked him about this.  He said they don't fully understand it, but there's a tendency for hurricanes to follow "trends."  For several years, Atlantic hurricanes would tend to go up the east coast, and whack North Carolina.  But they've been gradually shifting west.  Florida got socked last year, and this year, it looks like it's the Gulf's turn.

It could mean the Oil Patch should expect a lot more hurricanes for a few years.