"you’ve probably seen Democratic presidential candidate Barack Obama’s “Change We Can Believe In” and “Stand for Change” banners."

interesting to see the reasons behind the choice of font being used for a presidential campaigns'!! :-

read on...
http://www.helveticafilm.com/blog/2008/02/19/a-font-we-can-believe-in/

I saw parts of the Helvetica movie this blog's about, a very nice documentary.