On a visit to the Smallville set in Burnaby, British Columbia, last month, there was little indication that the 10-year-old series was in the last days of production. Though the final hour of the show (airing May 13) had already been filmed a few weeks earlier, it was business as usual for the cast and crew as they still had to shoot a couple of earlier episodes. But there was one clue that Clark Kent's long-awaited transformation into Superman was approaching. As series star Tom Welling filmed a scene in the Phantom Zone with Justin Hartley (aka Oliver Queen, aka Green Arrow), the camera zoomed in on Welling's chiseled face, revealing a well-placed wisp of hair forming what looked a lot like pop culture's most iconic spit curl. (The episode, directed by Hartley, airs April 29. New episodes return tonight at 8/7c on The CW.) A few hours later, wearing a royal blue t-shirt, black jeans and black boots, a relaxed Welling took a break from filming to talk to TV Guide Magazine about his decade-long odyssey as the man who would be Super.