This free screensaver/practical joke provides a good quick laugh, although we don't appreciate its installation method. Don't Touch My Computer Episode 2 doesn't come bundled with spyware, but it does place shortcuts on your desktop and entries in your Start menu without your permission.
When you launch the application, you'll see an office-based scene rendered in cartoon animation. A man strolls onto the screen, announces he's stepping away from his computer, and leaves his watchdog in charge. If one of your office mates tries to access your PC while the screensaver is running, the dog will lunge to the front of the screen and begin barking loudly. In spite of this app's humorous nature, we still would have preferred a larger feature set; as it stands you only can disable the sound effects. Office clowns who don't mind the installation issues detailed above will probably find Don't Touch My Computer Episode 2 an effective weapon.
Source : http://download.cnet.com