NYTimes for iPad
This app has been optimized for Retina readers, resulting in crisper fonts and dazzling graphics for The Gray Lady's iPad-toting subscribers. New version 2.2 also lets you highlight and copy article text and look up word definitions.
Evernote
In addition to being optimized for the Retina display, Evernote version 4.1.9 delivers several bug fixes and improvements, including indentation support for checkboxes and note title suggestions.
Kindle