Will we ever see a great Lex Luthor portrayal in the movies?
Hackman portrayed Lex as a used car sales man, more comic relief then anything, one note characterization, campy moments that undercut his menace and with a ludicrous scheme that never would have worked. He doesn't seem smart, he boasts about his intelligence rather then doing intelligent things.
Spacey is just doing a Hackman impression, sure he is more menacing places, but campy moments undermine his menace and his scheme is even worse then Hackman Lex's plan.
Eisenberg Lex is the worst of the lot, again campy moments undercut his menace, he lacks any of the charismatic elements Hackman or Spacey had, has a really stupid scheme and seems to be playing the Riddler instead of Lex.
Its a shame that Obadiah Stane from the Iron Man movie comes across as a better Lex Luthor style villain then any version we have seen on the silver screen.