Shawn asks his father for a favor running a sample through the lab, but Henry makes him jump through a series of hoops to make up for his past irresponsibility before handing over the results in episode 1x02 "Spellingg Bee". In a flashback to 1989, Henry has young Shawn accompany him on a stakeout of their home looking for a newspaper thief in episode 1x04 "Woman Seeking Dead Husband: Smokers Okay, No Pets". Henry uses cereal to teach young Shawn a lesson about turning a problem upside down in episode 1x05 "9 Lives". Henry council's young Shawn to come up with another approach to dealing with his bully in episode 1x07 "Who Ya Gonna Call?". Shawn comes home in his cape to find Henry waiting for him with a lesson on what makes a real hero in episode 1x08 "Shawn vs. the Red Phantom". Shawn talks to his father about Brett Connors's suspicions and the siminlar case from decades ago in episode 1x09 "Forget Me Not". Shawn and Gus head to Henry's house to ask about the plants in Hugo's garden where they discover that he has a woman over in episode 1x10 "From the Earth to Starbucks".
Source: Psych Forums