If you're testing out Office 2010 and still use a Windows Live/Hotmail account, then the release of a new version of Microsoft's Hotmail Connector is potentially welcome news.
The in-beta version 14 of the software (which has regained the allegedly dead Hotmail brand -- so much for Windows Live!) works in Office 2003, 2007 and 2010. It adds better junk mail filtering and a more integrated approach than earlier releases. While I suspect not too many Lifehacker readers are actively using either Hotmail or Windows Live, it's a useful option if you are.
Announcing the Outlook Hotmail Connector Beta [Microsoft Outlook Team Blog]