Every year, media sites publish best and worst lists. If you didn't see it, Website Magazine has an interesting list of the Biggest Web Blunders of 2011
It probably could have been longer We discussed one of these, GoDaddy's SOPA problems
Website Magazine also had a 6-part Best of 2011 series starting with eCommerce Pages.
Time Magazine ran the 50 Best Websites of 2011 and some of these sites are exceptional, but I didn't agree with every selection.