RICEaRONI
Super Freak
That may be overstating it a bit. I don't hate Romero, but I don't think he is singularly responsible for all subsequent live-action Jokers.
Tracing Ledger's Joker to Romero is like tracing Bale's Wayne/Batman to Adam West. The characterizations have nothing whatsoever in common. Ledger's was dark, murderous and maniacal; Romero's was goofy and comical (just as Bale is dark and brooding and West was campy and ridiculous). Romero did the first live-action Joker ... but he didn't originate the character. The character was drawn from the comics, and Ledger's and Nicholson's representations might very well have been identical even if there had been no Romero Joker.
SnakeDoc
Never said you could trace Heath to Romero. That would be moronic. Heath never even drew any inspiration from Romero's Joker. Heath's first firsthand resource of the joker was "The Killing Joke"
I am saying that you can't hate Romero. To say he is "ashamed" of having the same last name is blasphemy. Look at "Batman #1" which came out in 1940. The Joker is exactly the same as Romero portrayed him. Silly, over the top, and criminally insane. Anyone who is a fan of the Joker is a fan of Romero.