This is probably not a big deal at this point, but this is a nice demo video of a video call on Windows Phone running Mango. Obviously a lot of phones can do this now, but it's great to see Microsoft jumping into the action.
The HTC Titan and Windows Phone Mango look really smooth, and slick. The video call looks a lot like Apple's Facetime so we'll all be used to it when we jump over to WP7.
A quick demo of video chat using the front facing camera on the upcoming HTC TITAN with Windows Phone 7.5. See how easy it is for Aaron Woodman, director on the Windows Phone team, to use the Tango mobile app to stay in touch.