I did this at the TOPP office 3/13/08 and at PyCon Chicago 2008 on 3/14/08.

Slides and code samples are here

 Intro:

 "REST (Representational State Transfer) is the paradigm that allows the web to scale massively. Yet REST is also the hot new architectural style for web services. So  what is REST? This talk aims to answer that question, head off a few common misunderstandings, and demonstrate the REST style with simple walk-throughs of  client/server interactions.

 
The talk is aimed at anyone interested in web services in general and REST in particular. It does not presuppose knowledge of REST, nor of the HTTP specification. Moderate familiarity with Python is assumed for the second half (the simple example server will use WSGI, but it's OK if you don't know WSGI). Some familiarity with HTML is desired."