Every library struggles to provide some sort of unified experience for its users, despite using hosted solutions for many of its resources. Getting these varied sites designed by countless different vendors to look like part of your library's site can be a challenge. I've found great success in combating the lackluster HTML and CSS of library vendors by using jQuery to make the page I want, rather than the page I have. I'll show some examples of projects I've completed as well as the Open Source projects they have spawned (360Link Reset, hasMedia?).
Clipping is a handy way to collect important slides you want to go back to later.