Prototype and jQuery - going from one to the other

During a conversion with John Resig at the FOWA he mentioned it would be useful to have a tutorial that explained what jQuery doesn't do that Prototype does and visa versa, and in particular how X process is done in each library.

Below you can find the presentation I put together that goes through the core of both libraries and gives you a process by process comparison, explaining how to achieve each function in each library.