Lots of people who appreciate good comedy.
WKRP was one of the best written and acted sitcoms in history. And a big part of how well it worked was the way the worked actual rock music into the show (case in point: the Thanksgiving ep and Dr. Fever playing "It Came Out of the Sky" after the fateful news broadcast from the Turkey giveaway at the mall; the use of the Star Wars theme as Carlson's campaign music).
However, when the show was made, the producers apparently didn't license the music for sydication or video, forcing the eps to be, sometimes, drastically redubbed to remove the copyrighted music. Depending on the scene, this really hurt the flow of the show.
This isn't to say that WKRP still isn't better than 90% of everything ever produced for TV and it isn't to say that, if you never saw the show, you shouldn't check it out. But understand that, if at times the show doesn't make sense, this is why.
