I came across several announcements for this event on Usenet, and while obviously not something designed for hobbyists it still may be of interest:
The SGI User Group's annual international Technical Conference will be held 23-27 May, 2004 in Orlando, Florida, USA. The user conference is open to all SGI customers.
The SGIUG 2004 conference will include technical information and tutorials, as well as an opportunity to meet with SGI's top executives and engineers. There will also be a tour and dinner at the Kennedy Space Centre.
The Organizing Committee will present the results of their work and nominate candidates for office. There will be an election at that time to accept a more formal organization and officers to continue to refine the group. Please make your desires known in regards to your participation and ideas on making it a world class user group.
More details at the official website, as well as a PDF of the official flyer: