From everyone here at TFN and Rebelscum, May the 4th be with you all!!
Make sure you spread the word to as many people as you can. Call your friends and family members. Run into your boss' office while he/she is in the middle of an important meeting and say it. Send out a mass e-mail to all the contacts in your Address Book. Tell it to the pizza delivery guy tonight after he drops off your pies.
And how about capping off the day with a little Star Wars DVD action tonight with the family?