For a course on cluster algebras (by S. Fomin): http://qgm.au.dk/video/clusalg/
EDIT: Some graduate short-courses in FCEyN, UBA, Buenos Aires, Argentina:
- J. Harris, Intersection Theory
- R. Hartshorne, Introduction to Deformation Theory
- D. Maclagan, Introduction to Tropical Algebraic Geometry
- P. Beelen, Algebraic Geometric Codes
Here are the links to the videos of these 4 lectures.