Package

From the AppleCare Knowledge Base Article ID 60726:"Package First Aid is a utility that resets folders that have been incorrectly configured as application packages. If you have a package or folder that cannot be opened, drag it on this utility to reset it as a folder. Do not drag application packages on this utility."  Personally, my Package has never needed First Aid, but if it has happened to you, join in the discussion below! 

Thanks again for the idea, Chris Argiropoulos!

Back Zap

PRAM , or Parameter RAM, is a portion of RAM that stores information about your Mac required boot up and keep track of settings, such as the Date & Time, AppleTalk, Monitors, and Starup Disk Control Panels.  When you "zap", or reset the PRAM—which is accomplished by simutaneously pressing the Apple, Option, 'P', and 'R' keys at startup—your Mac will revert to its factory settings.  One side effect of the zapping is that sometimes the Memory Manager will reset to its default date, 1904 .  Other computers bring you back in time, too—like every time you turn on a Wintel PC. 

Why 1904?  If you know, please post below!

The Fury of Apple

In 1994, with CEO Michael Spindler at the helm, Apple finally gave up its lifelong tradition of  hoarding the Mac OS and denying third parties the license to clone the Macintosh.   Soon after, Power Computing—with its pugnacious Sluggo-like mascot issuing the slogan "Let's Kick Intel's Ass!" and "We're Fighting Back for Mac!"—introduced their PowerBase, PowerCenter, PowerTower.  Other clones like the Motorola Starmax, Umax SuperMac, and Radius System entered the ring, offering lower cost Mac-compatible alternatives to the world.  These clones helped expand the Macintosh market, but not enough.  In 1997, with iCEO Steve Jobs in command, Apple issued a real Technical Knockout when it bought out Power Computing's remaining Mac OS licenses and engineering staff, sending the ailing clone factory down for the count.  Steve Jobs could be heard boasting, "I am the greatest!"

iTunes 2.Ow

iTunes 2.0 for Mac OS X was only online for a moment before it was taken down and replaced with iTunes 2.01, yet hundreds of users managed to download and install it. Some audiophiles with multiple partitions and hard drives were suprised to find that, after installation, they had much more space to store their mp3s. That's because every partition except for the iTunes volume was erased! Fortunately I tuned into web sites articles like Macintouch.com and Mac Night Owl, and avoided such a catastrophic undocumented feature.