Here's a guest-starring scoop we didn't see coming:

Mötley Crüe will perform on the May 14 season finale of Bones.

Look for Nikki Sixx, Vince Neil, Tommy Lee and Mick Mars to rock out to their hit, "Dr. Feelgood," in The Lab nightclub. They'll also interact with Brennan, Booth and other key characters.

He might not be as loud, but Eric Millegan is also booked for the Bones season finale.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.