Two dollar bills are still very much in circulation. I know a guy who works for State Street Bank in Boston, MA, and has been trying to get into politics for years. In an effort to promote himself to his constituents he would stop by the vault and exhange thousands of dollars into two dollar bills and Eisenhower silver dollars. Every time he would pay for something he would use his unique currency and like magic the cashier and anyone around would start up a conversation. I'm not really sure how many votes this actually got him, but he sure met a lot of new people this way.