Setting Global Template Variables

[eluser]Philip Pryce[/eluser]
Right well, i'm kinda new to coding in Code Ignitor, i've know most of the basics and such. There is still one thing that alludes me. How can i set some application wide variables?
Say i wanted to be able to give the site a dynamic title, so i can reference it in all the templates without passing it view the $this->load->view function.
I feel this should be easy, but i cant seem to find a way.