GOOD MORNING: Annette Bening and Warren Beatty are expecting their fourth child next spring. They are parents of daughters Kathlyn (age 7) and Isabel (2-1/2) and son Ben (5). The youngsters have been told to expect a new arrival — whose sex has not been revealed — and all the Beattys are excited. Daddy, who has been much in the news lately with a possible run for the leading role in Washington, has not given any print or TV interviews on the subject. However, that may change when he makes a speech Sept. 29 at the BevHilton. He will be the recipient of the Americans for Democratic Action Eleanor Roosevelt Award “For a lifetime of creative and political integrity.” Norman Lear will make the presentation to Beatty. Appearances in a video being readied by ADA president Lila Garrett include Paul Newman, Rob Reiner, Sean Penn, Tim Robbins, Goldie Hawn, Roseanne, Mayor Willie Brown, Sen. Paul Wellstone, George McGovern, California State Senate Prez Pro Tem Dennis Kucinich, Cal. State Senator Tom Hayden, Bill Rosendahl, Stanley Sheinbaum and Arianna Huffington, most of whom will also be on hand. Of one thing you can be certain: Beatty will address the need for campaign finance reform. And don’t look for Beatty to be a part of any “reform” party — he is a Democrat. For tickets to the ADA event, call (323) 651-4440 … While Vice President Al Gore is the honored guest at a fundraiser hosted by Edie and Lew Wasserman Thursday, one for Bill Bradley will be hosted by Jordan and John Davis and Rebecca Pollack and Hutch Parker at the home of the Davises, Sept. 29. Lakers coach Phil Jackson makes the intro at the $1,000-a-head event. Davis says this support group is made up of “young Hollywood.”ILEARNED ABOUT MOVIES at the Emmys: An ebullient and obviously happy Julia Roberts was there with an equally happy and warm Benjamin Bratt. Although both were Emmy nominees for their “Law & Order” stints — he as series supporting actor, she as guest actress (the hardest work she’d ever done, she said) — the talk was of movies. There’ll be none for Roberts for a while; she said she’s taking a break after the in-succession hits “Notting Hill” and “Runaway Bride” and winding “Erin Brockovich.” Bratt, now segued to the bigscreen, is off to Australia to start “Mars,” costarring with Val Kilmer. One can only guess that Roberts will be spending her vacation from films in Australia … Jodie Foster, Emmy-nominated as one of the producers of Showtime’s telefilm “The Baby Dance,” said she plans to further her producing career with similar subjects that do not get the blessing of bigscreen companies. Meanwhile her epic “Anna and the King” is due from 20th in December. When I asked howcum she tackled the subject already successful on stage and screen, she noted that this pic will show the real king and the real Anna. And a real epic movie as well, we’ve been promised … While Calista Flockhart has her choice of films for the next hiatus from “Ally McBeal,” she says she hopes to make another legit return. She received raves from her Off B’way appearance in the “Medea Redux” act of “Bash” at the Douglas Fairbanks Theater this summer. Daily Variety’s Charles Isherwood said Flockhart’s “volley of anguish untethered to the narrative reveals an actress who can communicate wells of pain that reaches deeper than the text does” … HBO’s “The Sopranos’ ” James Gandolfini proved to be as charming as he is a driving actor. He retained his standing as one of the favorites after the Emmys as well, with movie offers continuing to lure him. For one, Ted Demme was seen huddling with Gandolfini. Demme’s next is New Line’s “Blow,” for which Johnny Depp is set as one of the stars … The happiest family in the TV biz has to be Walter C. Miller, his son Paul and his daughter Deborah. Walter won as producer of the Tonys, Paul as director and Deborah nabbed a daytime Emmy as director of Rosie O’Donnell’s show. Look for Rosie to return as host of next year’s Tonys. Walter C. is now off to Nashville to do the Country Music Assn. Awards, Sept. 22 on CBS. WE’LL FIND OUT WHAT Jerry Seinfeld did all summer: He returns to TV to host the season’s first “Saturday Night Live,” Oct. 2 following the “SNL” 25th anni show “live,” Sunday Sept. 26. Lorne Michaels says all the hosts and cast members are invited to return for it … Over 500 people showed Sunday morning for the Rosh Hashanah services by the Temple for the Performing Arts’ rabbi David Baron at the North Valley Jewish Community Center. Former SAG prez Barry Gordon, who serves as temple cantor, led the prayer chants. At Sept. 20 Yom Kippur services, L.A. Opera star Rodney Gilfry joins Hollywood Bowl conductor John Mauceri and small musical group on “The Death of Moses” aria from Kurt Weil’s opera “The Eternal Road” … The Lippin Group’s praiser Devon Dabbs, working at the Shrine preparation Saturday, was paged by the stork and rushed to the hospital where she was met by husband Jeff Maggard for the arrival of daughter MacKenzie Christine M. Devon was still wearing her Emmy Credential badge around her neck! … Barry Manilow brought up an 8-year old to his Greek Theater stage Saturday night. She was Vanessa, granddaughter of Judy Garland and daughter of Lorna Luft. She belted “Can’t Smile Without You” with Barry, to a standing ovation. That’s showbiz.