That was a local TV news broadcast indicating that yelling "Cha-ching" at Saints games became such a big deal that Green was given the key to the city. Here's some more information from a 1991 article in the Nation's Restaurant News:
But the biggest free plug for Rally's came during the New Orleans Saints and Chicago Bears football game earlier this season when football commentators Pat Summerall and John Madden mused over the meaning of "Cha-ching" and how it has captivated the powerhouse Saints and their fans.One of the "Cha-ching" commercials is below.
As cameras panned the Saint's Superdome stadium during the game, several fans had banners with "Cha-ching" written on them.




