It's kind of interesting that today on the Green Building Advisor the blog post of the day is "Grumpy Architect Time" in which Robert Swinburne, the architect, lists things that irritate him. And what is number 2? You guessed it. Here are the first 2 on his list.
"1. If your house is adequately insulated there should be little temperature differential between the ceiling and the floor.
2. "Adequately" differs from code. Remember, a house built to code is the worst house you can legally build."
He has gone through additional training to be a Certified Passive House Consultant to really take building energy efficiency to a new level - the Passive House standard which is the most stringent building standard in the world.