The first talk that I attended was on "Calculator-Based Laboratory Projects in the High School Math Classroom". The speaker was Donald McQuarrie and he focused on using well known science labs in the mathematics classroom. Students would use data collected from a science lab, plot it on a graphing calculator, and then analyze the graph using mathemtics (i.e. find the slope, max point, min point). He is going to email me his power point presentation if anyone is interested in this talk.
"Excel: A tool for Teacher Productivity and for Teaching Mathematics" was a good session to attend. The speaker presented some interesting ways of using excel with students. Her website, http://www.iste.org/bookstore/detail.cfm?sku=spread points you to different excel lessons that you can use in your classroom. I believe that all of the lessons are on a CD entitled "Digital Lessons in Excel".
Also, for those that are interested, one of exhibts is raffling off a Smart Board. I can't remember the name of the company, but as you walk around just look for a big television screen.