If you're fed up with the increasing use of foul language on prime time broadcast TV, Focus on the Family's website features a page where you can contact all five FCC commissioners to demand stricter enforcement of broadcast indecency laws. Amazingly, the FCC's enforcement bureau has never fined a televison network or station for violating these laws, and the FCC has ruled expletives such as the infamous F-word are acceptable on public airwaves in certain contexts.
If this were a matter of objectionable content on some cable station, I'd say let the free market work -- viewers should use their TV's channel delete and V-chip features, and notify their cable company and the offending stations that they have done so. But stations that use the public airwaves, which are a public trust and a finite resource, should be subject to regulation. For all the reasons we would not want obscenity in the town square, we should not want it on the public airwaves.
(If you find this site useful and would like to help make political devotions a mass movement, please tell others about PoliticalDevotions.com or place a link to it on your website. Then when you've done so, be sure to e-mail me so I can thank you personally! - Tim.)