PopWatch HeadScratcher No. 81

Another PopWatch HeadScratcher to get you through the weekend:

What do these five performers have in common?

Sandra Bullock
Robert De Niro
Jennifer Lopez
Moby
Carlos Santana

Your answer should be as specific as possible. Send your best guess to popwatch@ew.com.Be sure to write “HeadScratcher” in the subject line and include yourfirst and last names in your e-mail. We’ll post the most interestingresponses Monday afternoon.