Whether it's an incredibly powerful bomb or a gigantic super-laser, nothing adds spice to a science-fiction story like the ultimate of ultimate threats: the planet killer. What else would we expect from our favorite heroes other than saving the entire world? Cliché or not, we all have our favorites, and here's our top twelve world-destroying devices along with some science behind the fiction.
This may or may not surprise you, but the Internet is home to a large number of videos documenting the violent obliteration of electronic products. The videos range from the polished and produced all the way to one-shot Jackass vérité. We scavenged the YouTubiverse for the finest in gadget carnage, giving extra points to originality and to overall asplodi-ness. Here are the Top 15.