Java 5.0 Apple recently released the J2SE 5.0 as part of Software Update. Java 1.4.2 remains the default version of Java used for apps and applets unless J2SE 5.0 is requested specifically by an application or configured for system-wide use.
J2SE 5.0 Release 3 Release Notes

Boosting Cell Strength Indoors If you're, say, trying to use your cell phone in your basement on a regular basis, this article may be helpful:
Four ways to boost your cell signal strength indoors - Lifehacker

Entourage Help I was recently trying to move a large mass of email from Outlook 2003 to Entourage and came across this site, which is filled with lots of helpful tidbits about Entourage:
The Entourage Help Page

Safe Sleep Mode I've never actually had my PowerBook's battery die on me, but if you're worried about this happening while you've got it closed and tucked away, check out this article about "Safe Sleep" mode (which sounds amazingly like Hibernate under Windows):
MacNN | New "Safe Sleep" mode available on Mac laptops

And Finally Spotlight searching wins an award in Popular Science's "Best of What's New 2005":
MacNN | Popular Science honors Spotlight search