Adobe Premiere Pro CS5.5 includes several welcome changes regarding keyboard shortcuts.
See this video on the Video2Brain website for a demonstration of these new and changed features:
- new search field in the keyboard shortcuts dialog box
- updated and improved keyboard shortcut sets matching Final Cut Pro and Avid Media Composer
- additional keyboard shortcut (Shift+`) for maximizing active panel
For details of all of the new and changed features in Adobe Premiere Pro CS5.5, see this page.