Cable shows with the wealthiest viewers

Two-time drama series Emmy winner "Mad Men" returned to AMC on July 25 after a whirlwind of previews and promotions in print, broadcast and online. Despite all the attention and the show's affluent viewership, "Mad Men" has averaged far fewer viewers than other summer cable dramas like USA's "Burn Notice," and ad rates also are lower. An average 30-second spot on first-run episodes of "Mad Men" fetches about $20,000-$25,000, according to a recent trade media report -- not much, but it is a multiple of AMC's primetime movies. Plus, AMC bets that marquee shows boost its visibility, image and value.