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Adam Yauch aka MCA of the Beastie Boys dead at 47: Celebrity reactions

<div class="meta image-caption"><div class="origin-logo origin-image none"><span>none</span></div><span class="caption-text">Dancer, actor and musician Justin Timberlake expressed his sadness on his Twitter account, saying he is &#39;crushed.&#39;   &#39;Crushed to hear the news of Adam Yauch&#39;s passing. A true pioneer of art. My thoughts and prayers are with his family and loved ones.#RIPMCA,&#39; he Tweeted.  (OTRC)</span></div>
May 4, 2012 12:00:00 AM PDT