Slayer guitarist KERRY KING joined Marilyn Manson onstage in Los Angeles on Saturday (23Feb08) for a rendition of IRRESPONSIBLE HATE ANTHEM. Manson was performing at the Wiltern Theater when his 2007 touring pal took to the stage. Manson and Slayer performed a co-headlining North American tour last year. It marked the latest reunion for Manson, who has been joined on tour by former bassist Twiggy Ramirez. The former pals fell out in 2002, prompting Ramirez to quit Manson's band.