Skullcandy (NASDAQ:SKUL) names Hoby Darling, until now the head of Nike's (NYSE:NKE) fast-growing Nike+ Digital Sport unit, its new CEO, effective immediately. Darling arrives a month after former CEO Jermey Andus left to join an investment firm, and 10 days after Skullcandy shares were hammered thanks to light Q1 guidance. Investors like the hire, SKUL +3.2% AH. (PR)