I know it's hardly breaking news (the feature launched a few weeks ago), but I've gotta say, I love the traffic feature of Windows Live Local powered by Virtual Earth Beta.
For example, check out my morning commute - complete with driving directions and traffic overlayed.
I still find the WLLPBVEB interface to be quite a bit clunkier and slower than Google Maps, but the traffic feature trumps usability - most of the time (admittedly, sometimes I get frustrated with WLLPBVEB and fall back to the clean, simple Google Maps). The Beta of Yahoo Maps has traffic too, but their interface still has quite a ways to go.
I'm also surprised that neither WLLPBVEB nor Google Maps allow you to modify the route. Mapquest lets you choose a route that avoids highways - but how could would it be to let me click on the portion of the route that goes over one bridge, then drag and drop it onto another bridge, and have the rest of the route update. That's my cool random feature request of the day. :-)