I've just posted the following in the brainstorm section for the brisbane
installfest on the Ubunt-au wiki 
I'd appreciate any feedback / thoughts that you may have on this idea.
Also a request to the community. Have you have already prepared a talk on
any of these topics or others that may be useful? Are you happy to share
the presentation? Then feel free to forward to me. I hate reinventing
==snippit from wiki==
Assuming it will be hard to get people to drag in desktop PC, we could
provide an additional reason for people to come along on the day by having
a series of "lightning talks" / demo sessions on doing stuff with Ubuntu -
a Ubuntu Showcase if you will. This could run in parallel with the install
Some topics for demos/talks:
- Installing ubuntu (just a talk/demo)
- finding and installing software
- Photo editing
- email and calendar
- Internet safety
General Q&A "How do I......?"
I would be happy to run any of these but would welcome anyone else who
wants to run a session on one of the above or another topic. I think we
have access to a projector in the room.