One of my favorite memories of my dad is from Halloween day when I was in first grade (1992). It was the afternoon a few hours before trick-or-treating and my dad was helping me practice ride my bike without training wheels. 

He held onto the bike and ran behind me while I tried to ride. At a certain point I started riding faster and said, "Dad, you can let go." I kept riding and said louder, "Dad, you can let go now!" I was confused why he hadn't let go. I turned to look behind me and he was halfway down the street with a giant, proud smile on his face waving at me. He had already let go.