Yahoo Messenger on Vista

                                               
This is pretty cool, the new version of Yahoo Messenger is Built from the ground up specifically for Microsoft Windows Vista. It is based on Windows Presentation Foundation and gives a totally great user experience to the user.
Some of the features like animation, 3D effects, resizing the windows, aero glass effect, resize the contact list...
You can have tabbed dialog windows, and add your contact onto sidebar as well!
Click here to see the video on this cool yahoo messenger.