I came across this animation via http://flowingdata.com, a blog I subscribe to. It covers the period from the last glacial maximum 21,000 years ago and ends 1,000 years in the future., and shows the ice caps gradually melting away.
The visualsation has been developed at the Zurich University of Applied Sciences by Adrian Meyer and Karl Rege
“End summer sea ice is shown. The yellow line shows the actual shoreline. The future projection is based on the assumption of complete cessation of carbon dioxide emissions in 2100 (IPCC A2). Because world population is rather uncertain we froze to its current value.”