Make sure you say how much you love your dad's today! If you can, make today a family day (also assuming you get along with your family...I do). Maybe grill up some burgers, go golfing, or drink some scotch (or something to that effect). That's what I would do if I was home.
Oh, and congratulations to my sister on graduation today. Pretty exciting!
In their honor I went to Duane Reade's and bought some new bowls and silverware. To clarify, however, they are plastic and disposable. But I did buy then in their honor, that at least counts for something.