Rebecca Lieb
Conference, events, seminars....I love speaking on topics related to interactive marketing, advertising and media -- often drilling down into specifics such as search, email, RSS, blogging, Web 2.0 and social media, as well as the applications of these technologies to specific industry verticals.

Here's a list (in no particular order) of some of my hundreds of public speaking gigs.  If there's a ClickZ or Econsultancy in the name,  I was conference chair, too.