> My thinking was that each topic on the list would be a separate
> presentation.  The audience for each topic could be different.  For some
> topics (such as linux distros), it might be good to have multiple
> speakers, one for each sub-topic.

I think this is a good idea.  My objective is to bring a new user's 
experiences to the presentation.  I don't want to deter the experts among us, 
but I feel it would be important to have someone with this perspective 
present at the meetings.