From LQWiki

Eye candy is a general term that describes visual effects designed to impress the user but usually does not add significant functionality. Examples include 3D effects, transparency, animation, shadows, etc.

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• Compiz
• Cool games like
  • BzFlag
  • PINGUS
• Excellent applications like
  • k3b for CD/DVD burning
• Voice Synthesis (Make your computer speak - ear candy)
  • festival
  • Swift