He actually looks like HE is enjoying himself. Making for a better 'speech' (for lack of a better word. He is 'talking' and using a more smooth inflection and tone, making his flow a lot better while he talks. I must say that if he had time to 'practice' he might hear himself speak first. This time he's actually speaking as if he knows how it hears. It's not monotonous and linear. I'm actually impressed.
Hell, last time I heard one of his 'jokes' he sounded like he didn't get it... like the jokes to him weren't jokes, they were... part of the facts. He looked confused. Now, he looks like he's present. He's not just standing and orating.