18. Ron Perlman
Im not sure to what extent you can call Ron Perlman a film star as such, but hes been around the block. However, when your biggest role sees you plastered in more makeup and prosthetics than a Christmas special of The Only Way Is Essex, youve got yourself a problem. I said Perlmans status as a film star was open to debate, and to be frank, it is. A large majority of his roles are either voice acted or direct to video releases. So yeah, he straddles some blurry line between film star and that guy who voices all those people, but his issue is that hes just unrecognisable in his roles. Voice roles are never remembered for the actor, and Hellboy was all about the massive red monster. No one probably even knew it was Perlman underneath all that makeup. So while Hellboy will live on (maybe, probably not to be honest) Perlman wont.
17. Hayden Christensen
What has Hayden Christensen done exactly other than play Anakin Skywalker? Very little. The final (or third) Star Wars was released eight years ago. But since then, Christensen has vanished off the radar completely. Christensens performance in Star Wars Episode III was slated; with him being awarded with the Golden Raspberry Award (ok, Razzies are largely a joke award) for Worst Supporting Actor (he also won the award a few years earlier for his performance in Star Wars Episode II), so he was pretty much doomed from the start. I would say he could salvage his career, but lets face it, he probably cant. Having not really featured in a hit since Star Wars, for which he didnt receive the greatest of receptions, Christensen will be instantly forgotten.