Just about every good or great band has one bad album. What would your picks be?

Deep Purple- Slaves and Masters, The Battle Rages On
Def Leppard- Adrenalize, X
The Rolling Stones- Dirty Work
John Lennon- Unfinished Music No. 1: Two Virgins, Unfinished Music No. 2: Life with the Lions, Wedding Album, Some Time in New York City
Paul McCartney- Press to Play, Off the Ground
Metallica- St. Anger
Megadeth- Super Collider, The World Needs a Hero
Pink Floyd- The Division Bell
Billy Idol- Cyberpunk
KISS- Hot in the Shade