Nautilus is the default file manager for ubuntu yet it lacks some basic features like getting a terminal at the current directory, getting root at the current directory, etc…
Nautilus Scripts to the rescue, just install the scripts and you get a bunch of utilities on your right click on your favourite file manager.
Get it here
Installing Nautilus Scripts
1. Download the package.
2. Extract the files to /home/<user>/.gnome2/nautilus-scripts
(Do note that .gnome2 is a hidden folder, to view it you have to press Ctrl+H)
3. Close all running instances of Nautilus and open it again.
4. Right click anywhere in Nautilus and you will see a new option ‘Script’.