44. Daddy Yankee

In New York last summer you couldn't walk two blocks without Daddy Yankee's "Gasolina" pouring from somebody's car stereo -- all pulsating drum-machine beats, slinky female choruses and dense Spanglish rhymes. As reggaeton's breakout star, Daddy Yankee boasts a 50 Cent-style back story and has collaborated with MCs like Lil Jon and Nas. But what really makes Fino work is the way it outfits sleek, barrio-fabulous beats with brassy, shouted rhymes and slogans, making for an action-packed entree to reggaeton's rougher pleasures.

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