Are there any that have only ever shown themselves up as useless wastes of already shitty material?
Most actors, no matter how risible, usually have one or two "Aw, he/she was good in..." films. Case in point: Matthew McConaughey starting out in Dazed And Confused and A Time To Kill before he started getting his abs out on beaches for a living. But whose careers have been a total write-off?