Demo presenters get no more than five minutes for their pitch and my choice for best use of that time today goes to Persystent Technologies. The software makes sure that PCs on a network have a consistent set of software according to standards set by the IT organization. Where software is corrupt or missing, it fixes the problem.

CEO spent the first minute of his presentation trashing his laptop on the big screen. He deleted a bunch of system files, launched a destructive virus and messed up the registry. Then he rebooted. His PC came up cleanly and flawlessly, with all the files and settings restored.

If seeing is believing, then this demo did the trick. Nice use of five minutes.