I'm a huge keyboard shortcut fan (for a windows developer)... for common tasks it's just annoying to have to grab the mouse.
For me, one such task was the rename / resolve support in Visual Studio:
Using the mouse to bring up this dialog has got to be the most frustrating task in Visual Studio.
So much so, I refused to use it; instead opting for the right-click 'resolve' approach, or even manually typing in namespaces.
A few months ago, I stumbled on "Ctrl ." and to my delight ended my coding frustration.
I'm now more productive, less frustrated... do yourself a favour and give "Ctrl ." a go!