Jason Davis, Jeremy London, Eric Roberts on "Celebrity Rehab"

NEW YORK (CBS ) It's check-in time at "Celebrity Rehab."

The fourth season premiered Wednesday night on VH1 with host Dr. Drew Pinsky interviewing each celebrity as he or she checked into Pasadena Recovery Center for some high-profile, on-air treatment.

It was a chance for each cast member to talk about the role addiction has playe din his or her life. A panic attack and some talk of suicide provided the drama.

The cast this season has drawn some buzz. It includes reality TV ("The Hills") rich guy Jason "Gummi Bear" Davis; Tiger Woods' reported mistress Rachel Uchitel; former teen singing idol Leif Garrett; model and TV personality Janice Dickinson; "Party of Five" and "Mallrats" star Jeremy London and actor Eric Roberts, brother of the better-known thespian, Julia Roberts.