Not possible to see applications per category
Usability regression from 10.04: There's no beginner-proof way to see a list of applications sorted by category. The only list available is a list of all applications. It can be filtered by categories, but this step rather complicated.
Additionally, "recently used" applications are now displayed twice in unity: On the Dash Home and on the Applications tab. The latter one could be restructured to show the applications per category.
DistroRelease: Ubuntu 12.04
Package: unity 5.4.0-0ubuntu2
Uname: Linux 3.2.0-18-generic x86_64
Date: Fri Mar 9 12:01:32 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
UpgradeStatus: No upgrade log present (probably fresh install)