Frontline's programs have ranged from geo-politics to so-called "adult films," to equal rights, to the battle in Mogadishu, to whatever intriguing subject one can think of. And it's all done with the aim of informing and educating the viewer on how said subject is treated and perceived by those involved.
Unlike other documentaries Frontline merely reports the facts without pushing an agenda (unlike so many other one shot documentaries). Frontline lets you make up your own mind by presenting testimony of the people involved. It's a program whose narration isn't filled with conclusions worded to sound like fact (again, unlike many other documentaries). Instead it relies heavily on an interview format, where the answer to questions by the people involved are presented without being edited or otherwise spun.
If you're looking for a program that will inform you on complicated topics by presenting testimony, and not processed narration, then Frontline is the program to watch. Not all of its documentary reports will appeal to everyone, but rest assured each one is as thurough as possible at the time it airs.
Frontline is a great supplement to any news program for those who want more information.