Queen Latifah’s career as a musician and actress has now stretched past the two-decade mark, and her success shows no signs of slowing down.  She can currently be heard reprising the voice of Ellie, the wooly mammoth, in the third “Ice Age” movie, “Dawn of the Dinosaurs,” and she told us why she thinks she’s been able to stay on top in a notoriously fickle business (CLICK ON THE MEDIA BAR BELOW TO HEAR QUEEN LATIFAH)