- Course on Representations of SL2 (2012 version): See Pavel Safronov's notes for my class, as well as my own notes: Part 1: Basics and Fourier transform, Part 2: Introduction to SL2C, Part 3: Induced representations, Borel-Weil, Universal enveloping algebra, Part 4: Spherical harmonics, characters, Verma modules, Part 5: Harish Chandra modules, principal series, Part 6: Unitary induction and intertwiners, Part 7: Discrete series and hyperbolic space (more to come). U. of Texas Austin, Spring 2012.
- Course on Representations of SL2 (2005 version): Part 1, Part 2, and Part 3. U. of Texas Austin, Spring 2005.
- Khovanov homology. UT Austin Geometry and Strings Seminar, 10/06.
- Loop Spaces and Langlands Parameters. Northwestern Conference on Noncommutative Geometry. 5/07.
- Langlands Duality for Character Theories IAS worksop on Gauge Theory and Representation Theory, November 2007.
- Character sheaves and real groups IAS, February 2008.
- Loop Spaces and Connections, slides (!) from an Invited Address at the AMS Central Section Meeting, Baylor University, October 2009.

- Lecture notes and videos from the 2007 London Math Society Invited Lecture Series are available here.
- Lecture series Topological field theory and representation theory I-IV from the Workshop on Topological Field Theories at Northwestern University, May 2009. More notes from the workshop are available here.
- Topological Field Theory and Geometric Langlands: notes and audio and video from a lecture series at the KITP Santa Barbara workshop on Geometric Langlands and Gauge Theory, July 2009.
- Introduction to Geometric Langlands, notes from lecture at the Vienna workshop on Geometric Langlands and Physics, January 2007.
- Lectures from the Gottingen Winterschule on Geometric Langlands: Geometric function theory, Geometric Langlands and Topological Field Theory and Geometric Langlands and Real Groups.
- A three-part introduction to the geometric Langlands program I gave in 2002 is available on streaming video courtesy of MSRI: Geometric Class Field Theory, Quantization of Hitchin's Hamiltonians, and Factorization.
- The February 2005 Talbot workshop (for which I was the plenary speaker) provided an intense "Geometric Langlands retreat" for graduate students. There are notes available as one huge file or as individual pages courtesy of Megumi Harada.
- What's the deal with Geometric Langlands?: lecture notes taken by Parker Lowrey for a talk I gave at the Algebraic Geometry Boot Camp, a warmup workshop for graduate students attending the 2005 AMS Summer Institute in Algebraic Geometry, Seattle.
- The Geometric Langlands Program, audio for a lecture I gave at the Workshop on Forms of Homotopy Theory: Elliptic Cohomology and Loop Spaces at the Fields Institute in Toronto, 2004.