Madonna is #8.

She is the highest ranked in music, second highest female (to Oprah), #9 in income, #5 in web hits (3.1 million), #30 in press clippings (13,488), and #19 in tv/radio mentions.

1  Oprah Winfrey  
2  Tiger Woods   
3  Mel Gibson  
4  George Lucas  
5  Shaquille O'Neal
6  Steven Spielberg
7  Johnny Depp
8  Madonna  
9  Elton John
10  Tom Cruise