Sometimes it's annoying to have a "Figure" prefix when you add caption to a figure in beamer. Here is a way of how to eliminate that.

It's stylish to place an low-profile yet charming logo in some corner of your slides. Here we use the pgf package to accomplish this.

Honestly, I never clicked the navigation bar in beamer slides, and I really wondered whether anyone has used it or not. I suspect that most people keep it just to show the pride that he's using beamer...