Ours is "These are the days, these are the girls, this is the time of your life." I designed the logo this year, too.
It's a flower with eight petals, four of which have the names of our four sororities. The center is a spiral with our slogan, and the leaves on the bottom of the stem say "Fall 2001" and "Formal Recruitment." I designed last year's logo, too, before I was even Greek!