What do you think about Earth Day?

I work for an environmental group, and we’re begining to plan activities for Earth Day in April. This year is the 40th anniversary of Earth Day, so we’d like to do something special. Do you care about Earth Day? What do you like to do to celebrate or participate, besides attending a local Earth Day fair? What would entice you to join an environmental group and donate either time, money, or advocacy (i.e. signing a petition) this year? What would you like to see from an environmental group for Earth Day? And, because everyone wants to do something that “goes viral,” what would you be likely to pass along to your friends? Thanks for your input.