My own dad died when I was pretty young (around 13 or so), so I can't really celebrate today, of course.
However, I want to wish everyone a Happy Father's Day, and to take the time to be with your father today if possible, and to at least talk to your dad today by phone if you can't be in the same house with your dad. Treasure the time and the moments that you have with your father, because for some of us, well...the memories are all that we have left.
My best wishes to all the Fathers out there.
Now be good to your dad today. That is all.