While working today, I found that I need a copy of a specific DLL.
Unfortunately, this DLL only existed in the Global Assembly Cache on my work machine.
Microsoft provides no easy mechanism for copying DLLs out of the GAC.
I am sure third party tools to accomplish this goal are readily available, however I found an article by Patrick Wellink that explains how do copy GAC files from the command line.
Although not the most straightforward solution, it certainly was quicker than finding, downloading, and installing a third party tool.