The water is dripping from a tap in the kitchen into a glass bowl which is standing on a copy of Cream's 2005 Royal Albert Hall Reunion DVD - hence the psychedelic colours! Canon 50D with Metz 45CL-1 off camera flash, Tamron 55-200 macro lens. This is not an everyday situation in our kitchen, my wife would want me to say! It was totally set up to achieve the end result.