Ok, I will assume everyone already knows about this so I will not add the story, nor (most especially) post the video.

The best commentary I heard on this childish outburst came from Dana Perino who noted DeNiro was there representing the Broadway musical adaptation of "A Bronx Tale". Instead of using the opportunity to express appreciation to the anonymous men and women who made that play possible and worked on it behind the scenes, he chose to indulge his most puerile instincts and behave abominably. The audience, showing the same level of maturity, stood up and cheered. A disgraceful display all around.

DeNiro, btw, is a total punk.