System testing is basically a part of software testing and test plan should always contain specific space for this testing. To test the system as a whole, requirements and expectations should be clear and the tester needs to understand real time usage of application too.
The city of Milwaukee, Wisconsin was chosen as the location in which Happy Days was set. Tom Miller, one of the producers, grew up in Milwaukee. In addition, Milwaukee gave the show a midwest flavor that they thought would appeal to a broad-based audience.
Happy Days doesn't seem to be as fondly remembered as other ABC series of its day like The Brady Bunch. It went from being the Ron Howard Show to the Fonzie show fairly quickly, and one can forget that this show had some true family values which I appreciate in 2008.