With the just released Skype 5.7 Beta for Windows and Skype 5.4 Beta for Macs you can start a Facebook video call directly within Skype. Just connect your Facebook account to Skype, choose a friend and hit the Skype video call button. Your friend simply picks up from within Facebook.
In addition, Skype claims to have improved its video calling rendering giving all users a smoother video experience. Previously only available to Mac users, Group Screen Sharing is now available to Windows users with a Premium Subsription.
Skype Beta for Mac is available here.
Skype Beta for Windows is available here.