I've posted a list of sessions with openings at the SES San Jose 2007 conference. The openings are listed about midway down this post of guidelines—please read the guidelines before sending a pitch.
UPDATE: All speaking openings have been filled for SES San Jose. I'm in the process of getting back to everyone who pitched; please wait until the end of next week to contact me if you haven't heard anything by then.
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 5 December to take advantage of Early Bird Rates.