Smallville: Season one was a decent tweeny show about Clark's early days. Then, Season Two begins with Jeph Loeb's name added to the credits. The show turns into a silly, comic book soap opera trying to disguise itself as a teen drama. The show simply goes downhill, creatively, from there.
So, you are saying the first season of Smallville was the best? Wow...that's just...wow...
I think you'll find most will disagree with that sentiment and actually seem to like how Smallville began to build it's superhero mythology in season two and onwards.