21:9 is easier to compare, that's most probably why they chose it as a spec. There is a super ultrawide format as well 32:9 (double 16:9 obviously). http://www.guru3d.com/news-story/samsung-launches-chg-90-dr-compatible-49-inch-curved-ultra-wide-monitor.html
The Art of District 9 is by far one of the best art books I have purchased. http://search.barnesandnoble.com/The-Art-of-District-9/Daniel-Falconer/e/9780062064301
Directory Opus 9 is the shit! You will become addicted to it's awesomeness. It has so many actual USEFUL features it's not like 3dsmax 9 or Photoshop 11million at all.
In max 9 and up if you hold down Ctrl and select 'remove' it'll take both the verts and the edges. It's in the "what's different between 9 and 8" document.