A Smallville Backstage special aired around season 4, with a series of interviews with the cast of Smallville.
Here’s Tom Welling’s interview with Brooke Burke. It’s an old interview so Tom is younger here, and still had a boyish look. He just looked so cute and friendly, even a little shy.
Brooke recalls Smallville highlights from the pilot episode in season 1, and asks Tom (aka Clark Kent) about the discovery of his powers and origins.

[...] two of the Smallville Backstage interview around season 4. This time, Michael Rosenbaum joins Brooke Burke and Tom Welling on the set, and a little flirting [...]
Tom Welling can wear a Superman uniform without a mask or a hood if Saturgirl or Jor’el makes everyone think that Clark and Superman don’t look alike! That’s why we have a need for the glasses so it would help make him look diffrent! No tights no flights? Season 9 will have Clark fly for the first time when Kara teaches him how! This will make way for new Smallville viewers and a new movie! This show can last a very long time!