RuPy 13: IPython is not just about Python anymore / Min Ragan-Kelley
There are a few aspects of IPython's relationship with languages other than Python, and I would be happy to discuss any or all of them as appropriate, given time / interest of the audience:
language magics for running one cell in another language (%%R, %%Julia, etc.)
non-Python kernels (IPython is really a REPL message protocol now, so any language can implement a kernel - node, ruby, and Julia all have demo implementations)
The IPython Notebook itself as a multi-language environment:
Python for kernel-side code
Markdown for rich text
LaTeX for math
Javascript for dynamic / interactive output