For those who celebrate it (and we have no clue how widespread it is in the world), Happy Valentine's Day!
Open Recent Office 2008 Docs by Date
Office 2008 applications like Word and Excel now list recently opened documents on a File > Open Recent submenu. Choose More from that menu, and you'll get a multifunction Project Gallery dialog. Click the Recent button at the top and then select a date range in the Dates list to find files that were last opened today, yesterday, earlier in the week, last week, and so forth. (The Settings pane in the Project Gallery dialog lets you set how many recently opened files show in the File > Open Recent submenu.)