Trick or treat: last-minute costume guide

Here's a roundup of festive links that might stimulate some last-minute creations:

• Last Minute Halloween Costume Ideas: Video Game Edition
• 21 awesome game-related Halloween costumes
• Retrogaming Halloween Costume Ideas
• How to build Pacman and The Ghost Halloween costumes

Trivia: can you guess what gaming-related defect the costume above (pictured) represents?

[Thanks, Andrew]

Answer: It's a ... dead pixel! Nyuk, nyuk, nyuk ... Happy Halloween!