Sometimes it's unconfortable when you're searching some files (for example when compiling and installing a program) and when you are "inside" the folder in the file manager, you want to compile. You need the terminal.
So, you need to reach the folder and reach that folder typing all the way to do it, and it's very tedious when the program name is too long.
I suggest that in the menu (File menu) it would appear an item called "Open Terminal in this folder" or simply "Open terminal".
Developer comments
This used to be available by default in GNOME but it was a conscious design decision to remove it by default. There are no plans to implement this by default in Ubuntu.
