Lady Ada has a new WAV Shield board that gives Ardy (my Arduino) a voice. My mind boggled when I saw this - a plethora of useful as well as pernicious projects came to mind.
A random wake up call alarm clock. Something that would say the weather from my weather station... To numerous to count. Ordered one and will have a code fest when it arrives. I betcha she sells out this one early ...
I wonder if you can write to the SD card with her software? That is something that could be KEWL...