The videos from the SciPy 2013 conference are all available online.
See all the videos at the Lanyard SciPy 2013 Conference Directory.
Here are a few of my other favorite videos:
- SciPy 2013 Keynote: IPython: the method behind the madness
- SciPy 2013 Keynote: The New Scientific Publishers
- Reproducible Documents with PythonTeX; SciPy 2013 Presentation
- Julia and Python: a dynamic duo for scientific computing; SciPy 2013