Screens: TV the week of July 29

Respect Yourself: The Stax Records Story (10 p.m. Wednesday, WPBT-PBS 2) -- When soul music burst onto the scene in the 1960s, its DNA had two strands. One was the polished urban sound of Motown Records in Detroit. The other was the raw rural shriek of Stax Records in Memphis. If you've never heard of Stax screamers like Wilson Pickett, Otis Redding and Sam and Dave, this documentary is a good way to learn what it was all about. And if you remember them, well, I don't have to tell you why you'll want to watch, do I?