Dawson's Creek - Season 6 Episode 16
That Was Then (aka Before and After)

Professor Heston orders Joey to baby-sit for Harley to make sure she does her homework. But Joey ends up serving as relationship counselor when she finds Harleys boyfriend, Patrick, hiding in the house and he starts to drool over Joey. Meanwhile, Dawson pays a visit to his past when hes asked to speak on Mr. Golds class at Capeside High about how it is to be working in L.A. Dawson has a student, named George, show him his movie in which he realizes that hes moved on from the teenager he once was. Pacey also returns to Capeside when his father is admitted to the hospital after suffering a heart attack where Pacey has an argument with his brother, Doug, about the way Paceys been treating the family by shutting them out.