‘American Oz,’ April 19, PBS

Thanks largely to repeated TV airings of “The Wizard of Oz,” each generation of Americans rediscovers the classic 1939 film and embraces it as their own.

‘George W. Bush,’ May 4-5, PBS

A warts-and-all view of the 43rd president of the United States is showcased in “George W. Bush,” a two-part documentary premiering on PBS Monday-Tuesday, May 4-5, 8-10 p.m. CDT each night.