Join Tom Welling and Michael Rosenbaum as we ‘phone home' this week and review Smallville Season 2 Episode 18: Visitor! In an episode following Rosetta, one of the most pivotal of the series, the guys grapple with the ups and downs of this alien classmate introduction. Tom remembers being shocked on set with Kristin as the horse ‘got into position' and also how wild the communication tower was in person. Michael staunchly defends Lex's privacy from his prying girlfriend and throws his hat in the ring amongst the other Canadian bullies in this episode.