In the scene where Clark plays pool with Lex, there is a point where they stop play to talk. At that point Clark picks up the #10 (blue striped) ball. Clark later rolls the ball across the table, when the camera cuts away the ball that's rolling is now the cue ball and not the #10. Other balls on the table change positions between the shots too.
Clark gets soaked (hair and t-shirt) from the leaking pipe and appears so in the back room when he walks through the door, magically his hair and t-shirt are completely dry.
The Marine officer who goes to Whitney's house to tell his mother of his death introduces himself as a lieutenant, but the rank on his cover is that of a captain in the Marine Corps.
Whitney is shown in Marine dress blues as a Private First Class (E-2) with the "blood stripes" on his trousers which is only worn by NCOs and Officers (E-4/O-1 and up).
However, "Whitney" is later revealed to be Tina Greer, a 15-year-old shape-shifter. Tina have no military experience and would not know this.
However, "Whitney" is later revealed to be Tina Greer, a 15-year-old shape-shifter. Tina have no military experience and would not know this.
When Clark leaves the cellar to save Lana the whoosh of his super speed happens before he takes off.