real snail mail
A "slow art" project by boredomresearch, RealSnailMail is "the world's first webmail service using live snails." Your e-mail could take days or even weeks to get delivered - if it gets there at all. (Apparently one of the RFID-outfitted snails hasn't delivered a single message yet.) Meanwhile you can watch the snailcam and ponder the meaning of instant communication...
So, drop me a line ;)
Official project launch is at Siggraph next month.