PowerPoint Mac - Details of the macintosh version of Microsoft's presentatin package. - http://www.microsoft.com/mac/products/powerpoint2004/powerpoint2004.aspx
Keynote - Drag and drop presentation software. Includes prefessionaly designed themes as well as graph and table creation tools. Includes the option to import and export to and from Microsoft Powerpoint. - http://www.apple.com/iwork/keynote/