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Court celeb power

More than two dozen of Cameron Douglas’ friends and relatives — including his Hollywood-legend grandpa, Kirk Douglas — are begging for mercy for the heroin-addicted scion when he’s sentenced next week for drug dealing.

In a letter to the judge, Kirk Douglas described his grandson as “always a pleasant guy who cared for others” and said he hopes to see him rehabilitated “before I die.”

The silver-maned “Spartacus” star said he recently flew from Los Angeles to visit his wayward progeny in a Manhattan lockup — “at 93, that’s a long trip,” he wrote — and “was gratified to see how well he was taking his incarceration.”

“He had no one to blame but himself.”

READ THE COURT DOCUMENT

Defense lawyers blacked out portions of the letters filed in Manhattan federal court yesterday, and intentionally omitted a plea from his Oscar-winning dad, Michael Douglas.

But a handwritten missive from stepmom Catherine Zeta-Jones called Cameron, 31, a “caring, considerete [sic], worthy human being” who’s been an “exceptional” brother to her children with Michael Douglas.

Even ex-Knicks coach Pat Riley weighed in. Cameron was a “gentle, fun, affable young man” when they met while Riley was with the LA Lakers during the 1980s, he wrote, but he “became addicted to drugs and a lifestyle with people that led to the poor choices and the consequences he faces today.”

On official Miami Heat stationery, Riley wrote: “I hope and pray . . . that he is sent to a facility that will be intense and harsh, but will focus primarily on education and rehabilitation.”

Others writing letters on his behalf include his mom, Diandra Douglas; former New Mexico Attorney General Paul Bardacke, a college pal of Michael Douglas; and filmmaker Jen Gatien, daughter of deported club king Peter Gatien.

Cameron — who began cooperating with the feds after his arrest — faces a mandatory minimum 10 years in prison, but his lawyers said they’ll seek a sentence of either the eight months he’s already served, or a 42-month term with prison rehab.

bruce.golding@nypost.com