Kelly Clarkson and beyond: Idols on the radio

Kelly Clarkson continues to rule the American Idol airplay chart, but there's all sorts of interesting Idol-related stuff going on in the lower range of the radio-format charts this week.

For example, while Kelly's still at No. 1 on USA TODAY's AC airplay chart with Stronger (What Doesn't Kill You), Idol acts also have four consecutive spots in the 30s of that chart: Carrie Underwood's Good Girl...