GOOD MORNING after: The Miracle Mile was farther west in Beverly Hills on Sunday night for the Planet Hollywood hoopla. The Beverly Hills police, panjandrums of the city, everybody and anybody who had any qualms about the arrival of the Planet in the neighborhood, were all there to welcome the celeb restaurateurs and their fellow thesps with open arms and voices. The VIPs paraded and/or limo’d from the reception in the Wilshire Boulevard and Camden eatery to the Rodeo Drive roped-off red carpet, which was lined on each side by thousands of fans and fotogs-TV crews, who were able to stock up on a year’s supply of footage and bon mots. The piece de resistance was the performances by Elton John, plus Chuck Berry, Bruce Willis and the Accelerators. The VIPs (I never saw so many agents) also were treated to Ambrosia’s ample and varied menu, boasting a seemingly endless supply of choice caviar. The evening reportedly cost 3 million-$ … I introduced Roseanne to the throng so she could make the announcement of her participation with Planet Hollywood’s Keith Barish, Robert Earl plus the King brothers, Richard, Roger and Michael, on their upcoming (1996) “Planet Hollywood Squares,” a’90s version of the 18-years-successful “Hollywood Squares.” It would feature guestings by the not-square Planet Hollywood star partners. Michael King told me they’d modernize the show in the same manner as the gold-mined “Jeopardy!”… Roseanne returned to work on her series Monday post-arrival of baby Buck. The arrival of the baby on her series will not occur for a month. And she’s delayed a planned gay wedding for Martin Mull’s character until after her TV baby’s born as well … Bruce Willis remained in a suit, tie and chapeau, rather than his usual super casual T-shirt and jeans, which he usually discarded during his previous Planet Hollywood concerts — to the delight of fans. Demure wife Demi Moore wore a piece of P.H. memorabilia, Rita Hayworth’s gown from “Gilda.” Willis returned to work Monday in “Gundown,” Demi to Florida in “Striptease.” Partner Sylvester Stallone doesn’t yet depart for Rome for “Daylight,” nor does Arnold Schwarzenegger as yet start “Eraser,” so both were at the ribbon-cutting for the public opening of their BevHills boite Monday when Stallone also contributed his gun from “Assassins” to the memorabilia collection … ABC VP John Hamlin, longtime Oscars show overseer, was on hand supervising the taping of his net’s special, “Planet Hollywood Comes to Hollywood,” to air next month. It’s a Tall Pony-Boxtop Entertainment project with Kevin Wall as exec prod, Anthony Eaton, producer, Danny Harris coordinating producer and Lauren Harris, director. It’s skedded for an hour — but they have enough footage for a miniseries!AT THE O.J. TRIAL MONDAY, visitor-observer Richard Dreyfuss. He had requested permission from Judge Ito to observe. “He was very gracious,” Dreyfuss told me. He’s readying to play a defense lawyer in a murder case in ASP-Par’s “Night Falls on Manhattan.” “But, doing research on a film — that’s only the excuse,” Dreyfuss admits. “This is great, tragic theater.” He said the most enlightening part of the visit was “I got to see the jury.” Did they notice him? “They didn’t know I was there — I was sitting in a far corner.” In the upcoming feature, Andy Garcia plays the prosecutor vs. Dreyfuss. “The case bears a resemblance to this (O.J.) case,” said Dreyfuss. “I claim police conspiracy in the movie.” Sidney Lumet directs in N.Y. with Lena Olin co-starring … Attorney Bob Shapiro, “Good Morning America’s” Joel Siegel, Norman Pattiz and Michele Lee at adjoining tables at Eclipse — discovered they were all Hamilton High alumni. Mucho laughter ensued … Joe Eszterhas says he wrote an added scene for “Jade” to follow its current, startling ending (when the killer’s revealed). “The studio may want to use the added scene,” he says, adding that he and director Billy Friedkin “want to go with the startling ending.” The movie opens Oct. 13, and Eszterhas’ “Showgirls” bows Friday. And Thursday, Joe and Naomi E. welcomed their second son, Nicholas Pompeo, at Santa Monica hospital. “NEFERTITI, QUEEN OF THE NILE” is the second big-budget pic planned by Ilya Salkind for his and wife Jane Chaplin’s Scent Entertainment Co. Their first is to be “The Abominable Snowman.” Salkind’s back in town at the BevHills Hotel having meetings on both — the first of six he hopes to launch in 1996 …”Home Improvement,” shut out in the Emmys, held its “Homey Awards” and — surprise –”Home Improvement” won every category. Joan Lunden and Charles Gibson, on the “Good Morning America” set, taped a seg for the awards, discussing the excitement (?) all Hollywood felt about the “Homeys.” Tim Allen of course, won as best actor and received the award, in the shape of a hex nut — to fit on last year’s award, a screw. It was presented by Mickey and Minnie Mouse on their set at Disney. The party that followed their awards appropriately was dubbed the “Lieutenant Governor’s Ball.” Ah, that’s showbiz.