Our school is taking the teachers and some parents to the ACCS Conference (Association of Classical and Christian Schools). It has been a couple of years since I've attended an ACCS conference, but I always try to see Christopher Schlect's lectures. Recently he has been doing more on lesson planning and class lecturing/discussion/exercises. He is a masterful teacher, and is able to communicate both the big idea/theory and its application clearly. He's a must see. I've used some of his lesson planning strategies, as well as (unsuccessfully in too many cases) his maxim to punctuate lessons by having something for the first five minutes to get students engaged, and the last five minutes to either wrap things up, or leave a question for continued consideration.
I also try to see Steve Turley at ACCS. He's usually got a good bit of research behind his talks, and puts things in ways that aren't obvious. His lectures tend to get me to think about what I'm doing differently, rather than change a practice.
Josh Gibbs is also phenomenal. He usually balances between saying things in a way that is surprising, but also having something to implement immediately or over time.
I've only been to one SCL Conference (Society for Classical Learning), but I found the atmosphere to be more intimate and relaxed (in a good way) than ACCS. I had more time to sit down and talk with people at SCL. SCL seemed to cater more to teachers as teachers, whereas ACCS seemed to aim at parents and teachers as members of the Classical Education movement. It is tough to compare because I've only been to one SCL conference, whereas I've been to four or five ACCS conferences (and they've grown bigger each year).
What about you, Paul?