The 'demoscene': Have you got the latest UltraforceTitanium10000-equipped desktop computer? The latest PDA? The latest Java Virtual Machine and the latest browser? Or have you got an 18 year old ZX Spectrum? Or a Commodore Amiga? Don't worry, there's always some way to show how powerful you machine of choice is. Demos have been around since the dawn of home computing and the best of them might someday be mistaken for video art.