Is on this website:
http://www.jumptheshark.com
I just stumbled upon this yesterday while getting info on an old TV show on nick called Salute Your Shorts (Dina was HOT).
This thing has every show I could remember, even those that lasted one season. The whole purpose is to tell when a show has reached it's peak and is going downhill.
Anyways, check it out and reminisce like I did.