[doug1001]

i've been a moderate fan of ipython; it's the ipython notebook that changed everything for me.

i can have everything inline: syntax-highlignted code, markdown, dynamic plots, and LaTeX equations.

(some examples: http://nbviewer.ipython.org/github/ipython/ipython/blob/mast...)

what's more, you can share you work as a static .ipynb document or dynamically via a server (rather than your localhost, which is the default).