Show Category Name on Page

In SF5, I've created a custom module type, Citations, which we're using to show a formatted reference set of academic publications.

I've pieced together how to use URL filtering to show subsets of Citations based on a category, for example:

/Citation/-in-Category/Categories/categorylevel1/categorylevel2

How do I dynamically show the current selected category on the page? Put another way, I'd like to change the page's <title> tag and the <h1>header on the page to include categorylevel2 so that it's clear to the user that a filter is active.