The new Skype version for Mac (2.8 beta) provides new cool features, as you can see in the following embedded video.
The one I prefer is, indeed, Screen Sharing. As a nomadic professional, I can finally enrich my remote presence in many sales meetings, being able to talk and show my stuff in very immediate way.
I used to share my screen using LogMeIn, but I think I will switch very soon to Skype 2.8 for Mac (already installed and tested the beta release).
Among other semplifications, the one I prefer is needing anything more than a Skype installation on the audience side, that makes a lot easier to organize remote - and effective - meetings.