Call it a combination boot camp/code sprint/demo-a-thon.
For people just getting started (which, as Kevin says, is all of us in some area), very hands-on, ground-up training. Coming in knowing a little, leave knowing a little more. Go back to your newsroom with a few ideas you can implement. Do code, video, FOIA, whatever.
For people who want to work, plan a project or three ahead of time. Set the expectation that those who want to can show up, code for a few hours on pizza, beer and Diet Coke and leave with something built (or close to it). CrisisCamp and Sunlight’s hackathon are good examples.
Figure out a way to demo cool projects without panels. I’ve got stuff I can show off, but I’d rather just set up a monitor somewhere with a fact sheet, then leave it all day while I go code or learn Flash or something.