Skype has updated their video calling software to version 5.2, bringing in some exciting new features to your Mac. The free version includes a "super awesome" background video chatting control bar, while the paid version takes you to the envious Windows level, unlocking group video conferencing, taking you a level up from Apple's built-in iChat client. There's also screen and document sharing to keep to interested.
The Windows version on the other hand, to keep the tradition of being better than the Mac version, has Facebook integration with the 5.5 update.
You can download the latest Skype client for Mac here.