Lansdowne Lecturer, U of Victoria, Nov 2011. Public lecture on "The Dark Side of the Universe"; colloquium on "Identifying the Nature of Dark Matter"
Silicon Valley Astronomy Lecture (pdf, audio), May 2009
TED 2008: "The search for dark energy and dark matter" (Feb 2008)
Classes without Quizzes, Oct 2006, and NCN AAPT Keynote Address, Nov 2006. “Dark Matter and Dark Energy: Mysteries of the Universe”
Galapagos World Summit Presentation, June 22, 2006: “CP Violation in the Quark Sector: What have we learned?”(6.7 MB)
APS Plenary Talk, April 16, 2005 “Mysteries of Heavy Flavors”
UC Irvine Seminar, October 20, 2004: “Quirks in the Search for Pentaquarks”
Caltech Colloquium, Nov. 13, 2003: “Physics at the B Factories: Progress and Prospects”
Classes without Quizzes for Stanford Alumnae, Oct. 17, 2003: “Matter and Antimatter: Not Quite a Mirror Image”
Presentation at Feb 2001 AAAS meeting: “Matter and Antimatter: Not Quite a Mirror Image”
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