Clark has spent all this time hiding his abilities. However when they want to have a "cute" or "sneaky" scene they have him glance around - barely - and then pull a super stunt. He is in the middle of the street.
Oh, the one that really kills me for that is in season four, when he keeps coming into their house through the front window. Despite the fact that there are rows and rows of apartments with windows directly opposite.
And then they wonder why there are rumours Lois is hanging out with Superman...
LabRat