One of the most awesomely creepy things I saw at Maker Faire was this "head in a jar" project by artist Marque Cornblatt. From the project literature:
Video Link. More of Marque's zombie explorations here.
A decapitated human head can be observed floating in a liquid-filled jar carried by a person in head-to-toe hazmat protection. The living head moves, makes eye contact and seems to struggle to escape it's water-tight vessel.
According to the "handler" the head was discovered by a CDC cleanup crew after a zombie outbreak near detroit, moaning and gnashing long after it was separated from the body. Quick-thinking personnel placed the head in a slurry of plasma, protein supplement and a top-secret organic antifreeze agent.
The head has been maintained in this state of animation for several weeks with no apparent degradation or decomposition. A hopeful CDC spokesperson was quoted as stating that this breakthrough may be the first step to understanding or even curing the zombie outbreak.