Hi Hill:
The overlays in the attachment were generated on lat-lon grid by the folks at NSIDC, so they do overlay 'around' the pole. As far as I know, you still can't place an overlay 'across' the pole. Too bad since we now have some good images of the pole that would make a good overlay. These are from the European Space Agency and they show the current (Sept 2007) Arctic ice extent

Quote:

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Envisat ASAR mosaic of the Arctic Ocean for early September 2007, clearly showing the most direct route of the Northwest Pssage open (orange line) and the Northeast passage only partially blocked (blue line). The dark gray colour represents the ice-free areas, while green represents areas with sea ice.

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Here is a link to the high res image High res Arctic

And here is a useful animation showing the extent of the Sept ice for the last 3 years. (2005 was a record low at the time):