I have to admit that I am a great fan of project about visualizing electromagnetic waves. That's why I like Ian Haig's Brain Tumour Helmets with microwave:

Exploreing the impact of microwaves and electromagnetic energy and their role in producing brain tumors as a form of body mutation, as in technologies such as mobile/cell phones. The work also explores the notion of the television as a form of 'haunted media'. Consisting of two specially designed helmets with infared headphones and a large video and sound installation and an assortment of antennas.

Why do I blog this? I find intriguing this idea of "the head as an antenna". As Regine reported it "The work addresses the impact of microwave technologies, not in order to highlight the evils of microwave technologies in society, but to engage notions of technology, which is potentially modifying the structure of our bodies, in this case through the brain tumor, as a catalyst of human/machine evolution/devolution". The project is a bit old but IMO more and more relevant.