GOOD MORNING: From “Mission Impossible”… to mission incredible. Tom Cruise is said to be ready to take off in a feature about Air Force Capt. Scott F. O’Grady. The pilot, who was forced to survive six days in the Bosnian countryside before being rescued last week, will be a guest on David Letterman’s show — date to be set this week. O’Grady’s said to be a fan of Letterman’s … In his curtain speech opening night on B’way, an emotional Red Buttons admitted, “It’s been a gut-wrenching week. I wondered — whether Mike Ovitz will stay at CAA or go with the Bronfmans!” The showbiz-packed theater roared approval of Buttons’ segue from the schmaltzy to the savvy. But when I spoke to him after the party at Sardi’s, he admitted, “I was starting to choke up so I got off. I stack tonight with winning the Oscar”– as supporting actor in “Sayonara” back on March 26, 1958, at the Pantages theater. After reading the reviews, he admitted, as he was surrounded by longtime friends who had flown in, “I’m like a kid in a candy store.” Friends included: Henny Youngman, Florence and Sid Caesar, the Eddie Brackens, Nancy (Olson) and Alan Livingston, Corky Hale (she was to have piano’d for Red but couldn’t take six weeks-plus off) and Mike Stoller, longtime CAAgent Martin Baum, Tony Quinn and Catherine Benzini, Gloria de Haven and Rex Reed, Carrie Nye and Dick Cavett, Marilyn Michaels, Connie Stevens and Tony LoBianco, Helen Gurley and David Brown, Nikki Haskell and Rosemarie Stack plus Friars from L.A. and N.Y. For the first time, the BevHills Friars Club is open to the public for lunch this summer, and it’s also open to ticket buyers for Big Band Nights starting Thursday …”Father of the Bride II,” still searching for a title, is hoping to get clearance for “Father of the Year.” The Steve Martin, Diane Keaton, Martin Short starrer got a sneak in Thousand Oaks and director Charles Shyer said reaction was “the kind of preview you dream of — even higher than the first.” Touchstone releases the under-$ 40 million pic at Thanksgiving. Shyer’s wife Nancy Meyers, who again produced and co-wrote this film with her husband, next directs their “Love Crazy” and Charles will produce.LADIES’ DAY: It’s been 20 years since I did ‘One Flew Over the Cuckoo’s Nest’ ,” recalled Louise Fletcher — who won an Oscar for her performance as Nurse Rached. And now after countless credits in front of the cameras, Fletcher tells me she’s decided to produce a feature. It’s “The Apocalypse According to Doris.” She’ll also star in the story of a small-town psychic who predicts earthquakes. So far joining Fletcher in the cast are Tess Harper and Lenny Von Dohlen. Steven J. Wolfe, with whom Fletcher worked on “Tollbooth,” teams to produce the script by Victor Goss, who also directs. Fletcher tells me she’s already looking for desert locations. Meanwhile, she continues in front of the cameras with “Virtuosity” and the two series in which she’s seen regularly, “VR.5″ on Fox and “Star Trek: Deep Space Nine.” She’s also to co-star in the bigscreen “Two Days in the Valley” and has a cameo in “Mulholland Falls”… Cynthia Sikes completed her first producing chores on “Sin of Silence,” a CBS telefilm with Lindsay Wagner and Brian Kerwin in Toronto. Sikes admits, “I served my apprenticeship for Sam Pillsbury, who was exec producer of the project.” She assured me husband Bud Yorkin had nothing to do with her first project –”He didn’t even read the script”– but she’d be tickled if they could duo on one … Eva Marie Saint’s playing a saintly role in Savoy’s “Mariette in Ecstasy” as a novitiate director and Mother Superior as well. She praises youngster Geraldine O’Rawe who plays the title role opposite other veterans such as Rutger Hauer and “Frasier’s” John Mahoney. John Bailey directs the Rastar pic with Frank Price and Mary Kay Powell as producers. Eva says she benefited from “Sister Carida” for this role. “Otherwise I might have been intimidated.” Acad winner Saint sez whenever she gets homesick for L.A. while in Canada, “I turn on CNN and watch the O.J. trial.” QUIET CONFAB IN A CORNER AT Mr. Chow’s: Dreamworks’ Jeff Katzenberg and CAA’s Bill Haber … How’s bizness at the BevHills Hotel? So good George Sidney’s already made reservations for New Year’s Eve … Five-year-old chef Justin Miller, a hit cooking up a storm on East Coast chat shows, is here — to guest with Mike and Maty — but his ambition’s to meet Wolfgang Puck, and of course Mickey Mouse … Christopher Reeve’s horseback accident notwithstanding, Bo Derek, an avid horsewoman, rides the lead horse in the post parade for the All American Futurity Race Sept. 4 at Ruidoso Downs, N.M. Sam Donaldson m.c’s dedication ceremonies July 15 as Hollywood Park’s R.D. Hubbard unveils a 255 -foot long bronze monument of eight horses up to 30 feet high … Burt Bacharach , whose horses have run in two Kentucky Derbys, will write the song for ABC’s telepic “Derby.” The song, sung by Tina Moore, is “The Best We Ever Had” written by Bacharach with B.A. Robertson.