By Amy Ryan
Updated March 23, 2007 at 12:00 PM EDT

Another PopWatch HeadScratcher to get you through the weekend:

What do these five bands have in common?

Derek and the Dominos
Herman’s Hermits
Judas Priest
The Marshall Tucker Band
Molly Hatchet

Your answer should be as specific as possible. Send your best guess to 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.