I am experiencing this strange phenomenon from last few months.
Some unknown shadow was asking me questions on my projects, on many scenarios on those which I work on daily basis. I have never seen the person behind the shadow still I remember the weird voice, but the funniest part of this situation is I answer each question that was posed with a louder pitch and getting into to new ideas where I can explore the best outcomes of those thoughts, sometimes those best outcomes remain in my memory I implement them on the very next day but the other times they have been to my subconscious memory.
A Wiki Definition for Dreams:
Dreams are successions of images, ideas, emotions, and sensations
that occur subconsciously in the mind during certain stages of sleep.
Not sure may be the habit of going to bed by 1 AM daily or may be the time I spend on SAP did this, Still I never mind whatever the reasons are I enjoy them as a part of my Day & Daily life ... 
Wanted to know from you, whether you have such experience ? Have you ever met your Shadow ? 
Srikanth Naidu