forget ppt.

mashable has another of their great lists.

Forget PowerPoint: 13 Online Presentation Apps

Here are the 13:

AjaxPresents
BrinkPad.com
Empressr.com
Google Documents
Preezo.com
PresentationEngine.com
PreZentit.com
SlideRocket.com
Spresent.com
ThinkFree.com
Thumbstacks.com
Vcasmo.com
Zoho Show