A work friend of mine introduced me to TripIt last week (I started traveling for my current engagement—back on the road!). It's a really great service. You forward all of your confirmation emails from travel agents/airlines/car rentals/hotels/etc, and it parses the data and builds a cohesive view of your travel schedule, complete with confirmation numbers and checkin/checkout times. Their mobile site gives you one-click access to flight status, too. The iCal feed lets me integrate it with my Outlook calendar and merge them into one view with the overlay mode. This is a BIG step up from manually entering every flight into Outlook (it's a good thing, too, since I seem to screw up time zones more often than I care to admit), and the process couldn't be easier: CTRL+F, CTRL+Enter. Done.