Microsoft SharedView (Beta) aka Codename "Tahiti"
Couple of weeks ago I downloaded a nice application from Microsoft that allows application sharing and collaboration called "SharedView"
According to Microsoft - SharedView Beta is a fast, easy way to share documents and screen views with small groups of friends or coworkers; anytime, anywhere. Use SharedView to put your heads together and collaborate - create, convey, and communicate…across physical boundaries, through firewalls, and down to the smallest details.
Other than meeting I would use this program for code review on offshore teams ( think about it :) )
I gave it a test run and loved the result, although it's just a beta phase.