"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 has consistently been in the top 3,000 surnames (last names) in the U.S. Census for at least 30 years. (This isn't actually that impressive.) It was 2,837th in 1990, 2,683rd in 2000, and 2,855th in 2010.