Make's videoblogger Bre Pettis put the Make MP3 player kit into a laser tag belt and gun. You pull the trigger to advance to the next song. Link
Other Makezine videos:
• How to use a Multimeter
• Circuit Bending
• How to Make a Birdfeeder Webcam
• Learn How To Solder – Skill Building Workshop
• Make Video Podcast 2006 Wrapup
• Build Bridges and Break Them!
• Woodblock Prints, Aluminum Reliefs, and Write with Light
• Shovercraft
• Camera Hacking
• Robot Race and Nitinol Lightswitch