This would be a great shirt for Ronald Wilson Regan (see my Ronald Reagan t shirt post if you didn't get that joke).  This counts as a near miss.  665 did not turn up anything interesting, but a search for six six five dredged up a band from Tbilisi, Georgia called Six Six Five.  With a massive 41 fans generated in the last nine months one can only speculate as to the quality of the music.  This is a situation where my policy of never listening to random bands off the internet will do me well, I think.  However, if you are interested here is their Facebook page http://www.facebook.com/pages/Six-Six-Five/65730436934 .  If you listen to them and they are better than their site would lead you to believe, let me know.