My two cents on season 2, it was a lot more exciting than season 1, because they�ve incorporated more science and music into the series. Also it�s more entertaining than season 1, although there were some good season 1 episode.
Some quick highlights
We learn more about Grissom�s ways, like when he would ignore his fellow CSI�s it becomes evident in the season 2 finale
Also we see more of the CSI�s personal life also Paul Milander was carrier over from season 1.
What I love about season 2 is �Cross Jurisdictions� where we are introduced to CSI Miami. I think more shows with spin offs should walk in CSI�s path.
This is about as good as I remember, I watched the DVD�s over a few days during Christmas break.
Now I�m waiting for Season 3 to come out but I�ve got that covered