Google just announced that presentation software will be added to their online Docs and Spreadsheets package "this summer". So it won't be long before they have all of the major building blocks that defined Microsoft's Office package - available from a web interface.
The really exciting part of this news for me though was that the software was acquired from a company called Tonic Systems. Tonic is "based in San Francisco and Melbourne, Australia"!
As a keen software dev in Melbourne I'm shocked and disappointed that I hadn't even heard about these guys...someone needed to throw me a frickin' bone here... ;)
[Although Tonic's webpage has been replaced by a Google announcement you may still be able to get at the old page - ironically - by using Google Cache.]
I'm really looking forward to using this application!