Choosing polar projection and tiling scheme for web mapping of polar regions?

NASA's Operation IceBridge has a web map for its data portal hosted by NSIDC (National Snow & Ice Data Center). It has tabs to switch between northern and southern hemispheres.

This might not be a good example as it is pretty static and it's in Flash, but National Geographic has an interactive map here: Discover Antarctica

Sometimes all you need is a PDF: Antarctica Ice Velocity map (info)