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