People don't know he exists. Their company is never missed.
I don't have a favorite, really (or a patron Saint), just a list of Saints I'm mildly interested in.
St. Xavier: "Very often he had no time to sleep or even to say his breviary but, as we know from his letters, he was filled always with joy" (CACINA
St. Nicholas of Japan: Missionary to Japan--and not just for a short time, but he made it his life work.
St. Athanasius the Great: Champion of orthodox Christology.
St. Nicholas of Myra ("Santa Claus"): a real fourth century bishop who helped the poor, was kind to children, and slapped Arius in the face.
St. Herman of Alaska: Missionary who brought Orthodoxy to the Aleut people of Alaska. From what I've heard, he seems to have been a thoroughly kind, humble, grandfatherly person.