I recently needed to get the public key of an assembly, so I went straight to the GAC (Global Assembly Cache) located at %WinDir%\assembly, knowing that the public key token is a column in that view via the file explorer. However, the assembly that I wanted was not registered in the GAC. So I navigated to the location of the assembly on my hard drive and started poking around in the properties thinking the public key value might be in there, no luck. Then I remembered Lutz Roeder's Reflector. I opened the assembly using Reflector and there it was down in the details for that assembly. Another reason to have this very handy utility around.