How to Interrupt a process the results in an unresponsive interface (like "Control-C") I imagine that this question has been asked, but I could not find the answer, so I'll ask it:

I just created an icosphere and tried to increase the number of subdivisions to 5. But, whoops, I entered 25! Now Blender is churning away on a difficult task that I would rather not be completed. Is there anyway to "Undo" a process while Blender is still "thinking about it"? Like a "Control-C" equivalent? Or, do I just need to kill the whole Blender application?
ESC key might do it.  When the task is going to take an age, you can go to Windows' Task Manager and stop the Blender program outright...(Ctrl+Alt+Del)  It does mean you lose what you've been doing since the last save however.