At OSU:
Algebraic Geometry Seminar: Year 2011-2012, Year 2010-2011

At UW-Madison:
Geometry and Topology seminar: Spring '09, Fall '08, Spring '08, Fall '07

Algebraic Geometry seminar: Spring '09, Fall '08, Spring '08, Fall '07

At UBC:
Algebraic Geometry Seminar: Fall 2005, Fall 2006