When Mark Shuttleworth introduced the HUD earlier this year in his blog post, most of us were amazed by it and the tabloids called it the most exciting feature of Ubuntu 12.04 'Precise Pangolin'.
You can invoke HUD with the Alt key and then type in the Menu item that what you want to access, like in the below screenshot I wanted to do a Word Count so I simply press w and HUD provided me with the Options. HUD also has the feature of fuzzy matching and it also learns what you usually do so it prioritizes the things you do often.
I wanted to do a word count but I mistakenly (intentionally to show fuzzy logic that it uses) typed qor, even then Word Count gets displayed. Similarly HUD work well Calc.
Here I am applying Merge and Center Cells on the selected cells. This is just the first iteration of HUD and if the sneak peak given by Mark in UDS-Q is anything to go by, we will have something truly remarkable and great.
Click here to install it or run the following command in terminal 'sudo apt-get install lo-menubar'. LibreOffice will support Global Menu by default in Ubuntu 12.10 'Quantal Quetzal'.
You can also get the latest LibreOffice 3.5.4 by adding this PPA "ppa:libreoffice/ppa" and updating your system or simply run these commands 'sudo add-apt-repository ppa:libreoffice/ppa' then 'sudo apt-get update && sudo apt-get upgrade'.
I would recommend that you check Mark's Introducing the HUD. Say hello to the future of the menu blog post to understand the vision behind it and the future holds for it.