When I plug my iPod in to my computer, every song I've listened to is "scrobbled", that is submitted at the website last.fm where it tracks the artists I'm listening to, suggests similar artists, and creates a radio station based on my tastes.
It comes as no surprise this week that Michael Jackson is the most played artist on the site (and people's iPods) this week.
Top Artists and Top Tracks Charts – Last.fm
The chart shows this past week he had twice the number of listeners of the closest acts (Radiohead, Coldplay, and The Beatles).
And of the top ten songs played for the week, only two aren't Michael Jackson songs. For the record, "Billie Jean", and "Beat It" are the top two. You have to go to #247 to find a Kanye West song or #321 to find U2.