De Niro gives a miraculous character performance, much different from the intense brooding loners for which he is renowned. He seems to disappear into this oddball, somewhat repulsive, but ultimately rather touching character. Sandra Bernhard, in her film debut, is nearly as memorable as Rupert's outrageous partner in crime.

This film about the cult of celebrity in America strikes me as a uniquely intelligent ironic masterpiece – though, witty as it is, it isn’t a comedy, despite what the title and the casting of Jerry Lewis might lead you to expect.

The King of Comedy, which Film Forum is presenting in a new 4K restoration for a week-long run, brilliantly keeps viewers unmoored, the result of its consistently off-kilter tone. Though filled with sight gags and corny jokes, the movie is also darkened by genuine menace.

Scorsese infuses this tale with the passionate energy of New York street life and wonder at the powerful workings of show business and studio craft. Yet his main subject is the ineffable factor of genius, which Jerry has, Rupert lacks, and no desire or effort can replace.

It would be difficult to describe Martin Scorsese's fine new film, The King of Comedy, as an absolute joy. It's very funny, and it ends on a high note that was, for me, both a total surprise and completely satisfying. Yet it's also bristly, sometimes manic to the edge of lunacy and, along the way, terrifying.