I'll be Bach....

I just saw the preview for The Sarah Connor Chronicles and I am in turmoil. It looks amazing and Lena Headley looks awesome as Sarah Connors. But......how are they gonna drag this series on over 3 or 4 seasons? Sometimes a TV series is reallly really good but just cannot be dragged on forever, ya know what i mean? Hello "Lost". Nevertheless when this comes to 7 in '08 I am gonna be watching this show keenly.