The Null Device
An enterprising hacker, noticing that his Nokia 6230i mobile phone has both an imaging sensor and Bluetooth, much like a wireless mouse, has written a Java applet that uses the phone as a mouse. It's not perfect (the imaging sensor is not designed for focussing so closely, so it needs a high-contrast surface), and currently requires a special custom driver on the computer, though he is working on making it behave like a standard Bluetooth mouse.
The hacker, going by the name of "Pyrofer", also has a number of other projects up, including a 1541-emulating memory card reader for the C64 DTV.
Taking advantage of the formulaic nature of electronic dance music, an Australian developer has created a box which automatically composes plausible trance music. Known as Infinite Horizon, the box creates five channels (Chord, Lead 1, Lead 2, Bass 1 and Bass 2) of randomised patterns; the human operator controls the higher-level build-up/break-down structure by muting and activating channels.
The site has a MP3 of about 10 minutes of output; it sounds quite passable, like something out of Berlin around 1995.