I totally listen to music while working. I usually listen to techie stuff like Polish Ambassador, Digitalism, and Chromeo but mix it up to Expendables every now and again when i need some guitar action. But i usually don't use it to entice creativity but rather to make tedious work more bearable. but im a web designer so i don't usually have to get too insane with my graphic design.
But yea, (good) techno is awesome for web designing cuz it's very technical and systematic while creating beautiful harmonies and rhythms, in much the same way, all that technical back end crap in web design works together to make a beautiful work of art. sorta the same. well if you consider web sites works of art. Lots of ppl dont... I like to. well some of em anyways... like mine. hahaha.