When I first opened the Lion finder, I was disappointed to see the "Today, Yesterday, Last Week" searches missing. Sure, you can use "All My Files" and set "View Options" to arrange by date, but it doesn't work as well as "Today" (specifically because it doesn't look into my downloads folder). In Lion, the searches in Leopard and SNL are there, just not visible. If you open /System/Library/CoreServices/Finder.app >(show package contents)Contents/Resources/CannedSearches -- some of the previous searches from 10.6 are there. Just drag the "Today" icon into favorites. Goodbye 'All My Files'