eComXpo is holding a free online "virtual tradeshow for search, affiliate and interactive marketers." A full speaker list is here with some well-known names from SES including; Anne Holland of Marketing Sherpa, Bryan Eisenberg of Future Now, Kevin Lee of did-it.com, Catherine Seda of Seda Communications, Matt Bailey of Site Logic, Christine Churchill of KeyRelevance, Lee Odden of TopRank Results, Greg Jarboe of SEO-PR and more.
Free and right in your office, can't beat that. Forum discussion at Search Engine Watch Forums and Cre8asite Forums.