Smart Memory Sticks
http://www.theregister.co.uk/2004/06/01/email_memory_stick/
This sounds like the next logical step in solidstate storage is now here. Of course adding a processor is going to add to the overhead in power usage but the added security certainly makes it the way to go. And also paves the way for onboard applications that will run totally within the memstick dataspace! Now thats COOL!