If a General Counsel is so inclined, opportunities abound to speak at conferences (See my posts of May 21, 2007 about the internal risks of publicity for the department; June 11, 2007 on publicity generally and 11 references cited; and Aug. 19, 2007 #3 on conferences.).
When you speak at conferences, you inevitably pick up ideas from fellow presenters, consultants, and audience members. You also strengthen your network of people whom you can call for advice. It may also be a good career move to be seen and heard; you never know when you might be looking for a new position. Finally, there is the ego gratification of applause, praise, and your name and photo in the brochure.