Radio frequency identification (RFID) technology is not new by any means.  It has long been a cool technology searching for the right problem to solve.  However, the time, and the price, may be right for some great RFID applications to emerge in the next few years.  ReadWriteWeb recently featured a blog from Thing Magic that will supposedly reveal 100 uses for RFID over the course of the next 100 business days.  If they follow through on the blog, this should be an interesting source of inspiration to keep in mind.