One thing I've noticed is that sometimes I'll put something on my list, but I still get those little mental "reminders."  For example, this morning I was in the bathroom and I thought, "Call Mom."  I get back to my desk and go to my @Calls list to put "Call Mom" on it and found I had already put it there 2 days ago.  So I had forgotten that I put the item on my list, but I remembered that I hadn't done this particular NA yet.  Any thoughts on this?  Is this just unavoidable?