Microsoft has introduced six Cleartype fonts in Windows Vista and Office 2007. They are Calibri, Cambria, Candara, Constantia, Consolas , Corbel. Read more about ClearTypeFonts at Microsoft.
Calibri was the most popular font for e-mail, instant messaging, website text and PowerPoint presentations in a survey conducted at Wichita State University. Read the newsletter.
Microsoft PowerPoint Viewer 2007 includes the ClearType Collection fonts which can be downloaded legally from Microsoft web site. Download Calibri Font