I find myself using Find Declaration quite often, but then I become lost.  Where did I just come from?  This happens too easily for me.  My train of though derails.
So it would be sweet if Find Declaration had an opposite command: Return to Origin.  
One could then browse around and read the declaration - even make a change here and there - and Return to Origin would get you back.
(Or, perhaps it could be named after that famous song: '"Return to Sender".  "Address unknown..." etc.)