Miscellaneous client-side fixes for bugs on Stack Exchange sites
The Stack Overflow Unofficial Patch (SOUP) is a project to collect various minor client-side bug fixes, work-arounds and usability improvements for Stack Overflow and other Q&A sites on the Stack Exchange Network into a single user script. Now, for your convenience, these improvements are also available as a Chrome extension!
The intent of SOUP is not to make any substantial or controversial changes to the Stack Exchange user interface, but to fix minor problems and omissions that the SE developers have overlooked or haven't got around to fixing yet. By combining these minor patches into a single user script, they become easier to install and maintain.
See the linked Stack Apps page (and the Github project) for more information on the specific fixes included in SOUP.