At the end of the story Clarke is seen standing on the football field at Metropolis University. As he walks out of shot you can clearly see the field has an actual center line between two 50 yard lines, this gives it away as a Canadian field and not a US field that only has a single 50 yard line acting as center.
Unless Lois was weighted down she should have floated when the sewer filled up with water.
When Clark forces Lois back into the closet, no clothing is seen, and instead, you can see the backstage area.
When Clark is the car in Metropolis, Canada Post mail boxes can be seen, and a TD Canada Trust Bank.
When Clark is recruited to Met U, he is standing on a Canadian football field that is 110 yards long, wider, and the field goal posts are in front of the endzone.
In the final sequence where Clark walks out onto the field, the stadium is actually BC Place. The 55 yard line (marked as a C) is standard sized CFL football field size, whereas Metropolis is approximately 100 miles away from Smallville, Kansas.
Geoff mentions that he wants to see his former coach, Wayne Quigley, with Clark. However, Walt Arnold would have been coaching when Geoff attended Smallville High.