We wouldn't wish any celebrity to have to utilize the services of a rehab center, but for some, it's just inevitable.  The warning signs are there, the celebrity thinks that they are invincible and is completely out of control.  It happens to the best of them -- and some of them don't come out of addiction issues unscathed.  Here, we give you our list of those celebrities of whom we think we could expect to check themselves in for treatment anytime soon -- before it's too late.