LOS ANGELES (AP) — Jack Nicholson’s Joker was a blast. Heath Ledger’s Joker is as dark and anarchic a figure as Randle McMurphy in “One Flew Over the Cuckoo’s Nest,” the role that brought Nicholson his first Academy Award.

Ledger’s performance in the Batman tale “The Dark Knight” is so remarkable that next Jan. 22, the one-year anniversary of his death, he could become just the seventh actor in Oscar history to earn a posthumous nomination.

“I do think that Heath has created an iconic villain that will stand for the ages, and of course, I would love to see him get an award,” said Christian Bale, who reprises his “Batman Begins” role as the tormented crime fighter. “But you know, to me, you can witness his talent, celebrate his talent within this movie. Anything else is gravy.”

Superhero flicks usually are not the stuff Oscar dreams are made of. Yet Ledger delivered so far beyond anyone’s expectations that he could end up as the second performer to win Hollywood’s top honor after his death.

“He may be the first actor since Peter Finch. He may even win the damn thing,” said Gary Oldman, who co-stars as noble cop Jim Gordon in “The Dark Knight,” which hits theaters July 18.

Finch is the only person to win posthumously, earning the best-actor prize for 1976’s “Network” two months after he died.

News of Ledger’s death at age 28 from an accidental drug overdose broke just hours after the Oscar nominations were announced last January, darkening what normally is one of Hollywood’s happiest days. The nominations next year fall on the same date because they were moved back two days from their traditional Tuesday announcement to avoid conflicting with the presidential inauguration.

With nothing remotely like the maniacal Joker among his credits beforehand, Ledger had been a surprising choice to fans, some feeling he was too young, others sensing he would not live up to the campy but earnest performance Nicholson gave in 1989’s “Batman.” (The role earned Nicholson a Golden Globe nomination, though he did not make the Oscar cut.)

As filming progressed last year, word began leaking from the set about the feverishly psychotic persona Ledger was creating.

With a marketing campaign heavily focused on the Joker, the movie trailers that followed presented a Joker with sloppy, ominous clown makeup that looked as though it had been applied in a windstorm. The brief footage revealed a character whose cackling humor cannot conceal the malevolent soul beneath.

“Whatever Heath channeled into, he’s found something quite extraordinary,” Oldman said. “It’s arguably one of the greatest screen villains I think I’ve ever seen.”

Fans were hooked, but some were skeptical when Oscar buzz for the performance started circulating after Ledger’s death. Comic-book tales and other big action flicks rarely are taken seriously by awards voters, who are willing to honor them for technical achievements but generally not for acting.

Skepticism dissolved once Warner Bros. began screenings for “The Dark Knight.”

“Heath Ledger didn’t so much give a performance as he disappeared completely into the role,” filmmaker and lifelong comics fan Kevin Smith said on his MySpace blog after seeing “The Dark Knight.” “I know I’m not the first to suggest this, but he’ll likely get at least an Oscar nod (if not the win) for best supporting actor.”

Ledger’s performance is surpassing even the sky-high expectations hardcore fans have going in.