Bing Travel Planner for Outlook
This is for all you road warriors, especially if you've taken a liking to Microsoft's Bing site. The Bing Travel Planner for Outlook helps you schedule and remember your flights booked through the Bing Travel site.
This add-in puts a button on the Ribbon, which essentially pops open a custom web browser window to a special Bing site. It might not look at much at first glance, but it is convenient for Outlook addicts.
Best of all, when you schedule trips, it automatically creates reminders for your flights (with the flight details included) and can generate out-of-office reminders.
Currently, this add-in is in beta, but you can download it now. It works with Office 2007 and 2010.