Smallville bloopers
Post some of the mistakes you have noticed. Like how Johnathan Kent talks to Clark in season four about being a quarterback, when in season 2 Clark mentioned that "he was playing his fathers old position... Tailback." [Yes, I have mentioned that before]
Anyways, in season 2... I believe in the episode Skinwalkers... Clark is playing pool with Lex and he picks up the 10 ball... the camera cuts away as Clark rolls the ball... and magically it is the cue ball. Wow.
Spoiler:
Too much free time for yours truly.