Sam Harris explains why monistic idealism is true and we are in Bishop Berkeley's God's dream in 3 minutes.
Source for Premise 1: http://youtu.be/pCofmZlC72g
Source for Premise 2: http://youtu.be/3zK7HyfzZFc
Source for Premise 3: http://youtu.be/LsrtOZdJitA