Macworld Signing -- I don't know the details, but I will be happy to sign copies of my book at Hayden's Macworld booth. Stop by the booth to check the times and dates.
Show Recent Items in Snow Leopard
The Recent Items submenu in the Apple menu is handy, but what if you want to work with a file in there in the Finder, rather than open it? Just press Command when that menu is showing, and all the Applications and Documents change to "Show ... in Finder." This feature is new as of Mac OS X 10.6.3 Snow Leopard.