Excellent piece by Daniel Eran Dilger on Apple's newest iteration of Mac OS X. "No new features," according to Apple, so I guess they're... enhancements.
If you're tired of the annoying "always floating" behavior of the Help window in Mac OS X 10.5.x, here's an easy Terminal command that will get it out of the way.
Help set a Guinness World Record for the most downloads in 24 hours by downloading Firefox 3, probably ready sometime this month. The release candidates have been pretty good.