This Official Facebook app enables you to make video chat with all your Facebook friends. The application is powered by Skype so you know the video and audio quality will be awesome.
Once the application is installed, simply go to Facebook.com and open up the Chat tab in the lower right corner of your browser. You will see all your friends and a new little camera icon next to their name. Just click on the icon and you will start a video chat with them, It's just that simple!
What's great is that if they are not answering, you can leave them a video message. Your video message will be waiting for them in your friend's inbox next time they check their messages.