are u preparing a ubuntu presentation?
http://nsrc.org/helpdesk/ubuntu/ubuntu-overview.ppt
http://www.slideshare.net/arpanchavdaeng/ubuntuoverview
http://www.authorstream.com/Presentation/Paolina-46127-Ubuntu-Why-name-use-Requirements-Gutsy-Gibbon-Software-Includes-Demo-include-Su-as-Education-ppt-powerpoint/
http://www.4shared.com/office/GUtOOgsE/Ubuntu_Presentation.htm?locale=en