Katherine McAlpine, at the time working in the CERN press office, had the idea for an LHC rap. She managed to get a couple of afternoon's access to the CMS and ATLAS detectors and, impressively, succeeded in sweet-talking a bunch of us into appearing in the video. Source: http://www.newscientist.com/blog/shortsharpscience/2008/07/rappin-physics.html