I speak at technical conferences regularly.

2012:
linux.conf.au Ballarat, Mistakes Were Made video, Stewart Smith and me: Databases in the Cloud, Postgres and Replication in 2012
SCALE 10x – Keynote

2011:
MySQL Users Conference 2011
PgCon 2011
Future of Web Apps 2011 – Las Vegas
OSCON Data 2011
OSCON 2011
Postgres Open 2011 – Chicago

2010:
LCA 2010 (New Zealand), January 18-23, 2010
Libre Planet, Boston, MA: March 19-21, 2010
LinuxFest Northwest
PgCon, May 18-21
Open Source Bridge, June 1-4
DevNation, July 10
PDXPUG Day, July 18
CouchCamp, September 8-10
Grace Hopper Celebration of Women in Computing, September 28-Oct 2

2009:
SCaLE
LinuxFest NW
OSCON
PgCon
FOSDEM
PostgreSQL Conference West (Seattle), October 17, 2009
Japanese PostgreSQL Users Group 10 year anniversary (Tokyo), November 20-21, 2009

2008:
OSCON
PgCon
SCaLE

Recordings of presentations:
Interview with me at GSoC Mentor Summit

How to Unrig an election – Ignite Portland talk on my trip to Nigeria, and how Ondo state unrigged their election