Red Hot Chili Peppers started as a goofy funk group made up of hard-partying white kids who liked to wear socks over their penises. Even with P-Funk commander George Clinton at the helm of their career in the early days, the Peppers were known more for their onstage antics than their music. But after the drug-induced death of their original guitar player, the Chili Peppers got a bit more serious, even as the partying continued. They enlisted Rick Rubin to produce their 1991 album ‘Blood Sugar Sex Magik,’ and everything changed. The album shot into the Top 5, and the band became alternative-rock stars in the first part of the ‘90s. Several lineup changes, and rehab stints, have since followed, but so has a newfound focus on career. ‘Californication’ is one of their sharpest albums, and 2006’s two-disc ‘Stadium Arcadium’ is an ambitious work from a band that had very little starting out.