ASKMEN has a cool feature called Celebrity Disownings. (nice round up on the celebrities that are heading to the D list)

Mission: Impossible III’s mildly disappointing box office take suggests that Cruise may yet escape the purgatory that results from a “celebrity disowning.� Others have not managed to escape their fate. All of the following celebrities were riding a wave of success when, within a short period of time, the public withdrew their approval. These disownings weren't snap reactions to scandals or career missteps -- they have persisted, thus far, and will require a major turnaround to win back the public's love. We didn't include flashes in the pan (Pee Wee Herman), or those who lost favor that was quickly regained (Hugh Grant).

See the List @ ASKMEN