"Seitz" is pronounced like cites, sights, and sites.
If I ever run for political office, I think I'll use the slogan:
Set your Seitz high.
In case you're wondering, Seitz is of German origin. According to a book I once glanced at, it means "victory." Maybe I should think about running for office. 8)
Seitz is the 2,837th most popular last name (surname) in the United States (Source: 1990 U.S. Census).