Digi Snacks [PA]Some might wonder how Wu Tang impresario the RZA has aged in the skin of his familiar retro futuristic alter ego Bobby Digital. A line from DIGI SNACKS' opening intro gives a hint, as he devilishly assures listeners that he's still got that "old Jack Nicholson grin, I stay sinister." He also stays subtly diverse, segueing from smooth funk guitar (swimming in entrancingly murky production) to the choppy, Southern rap inspired "Straight Up the Block,"