This site is driven with HTML5 canvas, CSS3, JavaScript, Web Fonts, SVG and NO image files. It's optimized to WebKit rendering engine and you can see it with Safari and Google Chrome.
Very slick, though the dot for St. John's is in entirely the wrong spot. Last I checked, it was still up here in Canada!<p>(Also, I very much dig that the back button actually goes back through the cities you clicked on, and not immediately off the page.)
I did something similar a while back. I used canvas and coastline coordinates (<a href="http://www.ngdc.noaa.gov/mgg_coastline/index.jsp?llat=-90.0&ulat=90&llon=-180.0&rlon=180.0" rel="nofollow">http://www.ngdc.noaa.gov/mgg_coastline/index.jsp?llat=-90.0&...</a>) to draw the globe.
However I could never quite figure out how to draw the world perfectly.
I used canvas.fill and I would always end up with some parts of the world showing, that actually should have been hidden. I can post the source code if you like - all it needs to be done is probably a viewport.