It's been over four months since Bob Saget passed away and Hollywood and the rest of the world are still in mourning, especially today, on what would have been his 66th birthday."We all miss you terribly down here," close friend John Mayer wrote on Instagram. "Though the days without you keep growing, so too does our grasp on everything we adore and admire about you, the love we learned to share because of your example, and the endless joy you gave at all times to the world around you."He added, "I just wish so badly we were getting dinner tonight. I love you so much."Celebs loved Saget and so did his TV family. The Full House cast remained close over the years and reunited many times on and off the red carpet long after the show ended. To honor the star on his birthday, we rounded up a few sweet photos of Saget and his beloved Full House cast from over the years.