Amber Riley and Derek Hough danced the Samba on week six of &#39;Dancing With The Stars&#39; on Oct. 21, 2013. They received 28 out of 30 points from the judges. The two received 4 out of 4 extra points from the &#39;Switch-Up Challenge.&#39; <span class=meta>(ABC &#47; Adam Taylor)</span>
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