Personally, I don’t watch Nash Bridges, but I have, on two occasions, seen five or ten minutes of it. Remarkably, both were stupid:
Occasion #1: Nash is in a three-way John Woo moment, in which he and bad guys 1 and 2 are pointing guns at each other, Nash has the MacGuffin in hand, Bad Guy #1 has Nash’s girlfriend hostage, etc. etc. How does Nash solve this? He throws the MacGuffin in the air and lets everything sort itself out during the general shooting.
Occasion #2: “And what do we have here? An instructional video on how to pilot a Russian Submarine, dubbed into English.”
The main site is called ** http://www.jumptheshark.com/ **
They have a set of categories that cause series to turn bad, or “jump the shark” (The one where Happy Days goes water skiing at the beach)