Well, well, what would you know. Not only today we have blasted off into our space week—Get Me Off This Rock—but it is also Star Wars Day. What is Star Wars Day, you ask?
According to the Wikipedia, it's May 4th because of the pun: May the Fourth Be With You. The Los Angeles City Council says that May 25th 2007 is Star Wars Day in that city—in honour of the release date of A New Hope: May 25, 1977. The rest of the Earthlings are happy to celebrate today. [Wikipedia—Thanks Genevieve]