Smallville tackles psychotic relationships this week as Michael Rosenbaum and Tom Welling revisit Season 3 Episode 14: OBSESSION! After the guys gush over their time on set with the wonderful Sarah Carter, they analyze some of Tom’s noticeable giddiness in scenes throughout the episode. Michael talks about the plastic butcher knife horror scenes and questions why Lana stays in her own psychotic relationship. Tom gives props to certain choices taken by Allison and remembers how they got an honest reaction to the ‘Jonathan walking in on his son’ scene in the episode.