Looking at these diners [1] I can't but think of the ones I used to go to as a kid here in South Florida. The one we used to go to often was Wags, the one located on US 441 in Margate [2]. They had a distinctive architecture—a series of trapezoidal columns ran across the front of the building. Each Wags had this.
Unfortunately, the one in Margate is no more—it's been torn down and replaced with a modern drug store. The one in Coral Springs [3] is now a Dennys [4] and the one in Boca Raton [5] is now the Boca Diner (and the only reason I know that is because it still has the trapezoidal columns across the front of the building).
The other diner I remember from childhood in South Florida is Sambo's, and it didn't last that long into the 80s (unlike Wags, which lasted until the late 80s/very early 90s depending upon the location). The one near my grandparents, also on US 441, in Tamarac [6] is no more. Even the building is gone.
[1] http://www.lileks.com/postcards/rest/index.html
[3] http://www.ci.coral-springs.fl.us/