GOOD MORNING: Martin Scorsese has placed his Dean Martin feature biopic “on the back burner.” He wants to have a dream cast in his movie — and that can’t happen for a while. Tom Hanks is his choice to play Dean (there’s nothing Hanks can’t do!) in the script by Paul Schrader who, last year, told me the rest of the hoped-for cast would be John Travolta as Sinatra, Hugh Grant as Peter Lawford, Adam Sandler as Joey Bishop and Jim Carrey as Jerry Lewis. All of them are currently busy in projects taking them well into the year (and next). Instead of starting the Martin biopic, Scorsese will probably next direct “Bringing Out the Dead” starring Nicolas Cage. HBO meanwhile, will debut its “Rat Pack” Aug. 22 in which Joe Mantegna plays Dean Martin to Ray Liotta’s Frank Sinatra. Scorsese’s version is about how Dean grew up as Dino Crocetti in Steubenville, Ohio — and died as Dino Crocetti … Playing themselves in the Andy Kaufman biopic, “Man on the Moon” will be “Taxi” series stars, Judd Hirsch, Marilu Henner, Jeff Conaway, Carol Kane. and Danny DeVito who plays George Shapiro, Andy’s manager. Tony Danza is not available to reprise his “Taxi” role — at present he’s on B’way in Arthur Miller’s “A View From the Bridge.” Peter Bonerz will play “Taxi” producer Ed. Weinberger. Also appearing as themselves, Lorne Michaels, and the Improv’s Budd Friedman … Can you imagine the pleasure of Brian Grazer and wife Gigi Levangie who were at a theater viewing “Zorro” when the trailers came on — first for her first feature, TriStar’s “Stepmom,” followed by his Universal pic “Psycho.” She says, “I owe (the pic) to my stepchildren, Brian’s two children.” The pic stars Julia Roberts, Susan Sarandon and Ed Harris and is directed by Chris Columbus. Wendy Finerman produced. And after Gigi’s next, “Teacher,” at Sony, she’s writing “White Trash Christmas” for New Line. “It’s an ode to a certain family’s lifestyle,” she says. Like the Grazers. Further, Larry Kasdan will direct her script of “Pre-Nup,” yup, also autobiographical. But about this one, Gigi claims Brian threatened, “I’ll sue you!” She answered, “Good, that’ll make another movie!”FRESH FROM THE DRAMATIC marriage-and-split with Robert Evans, Catherine Oxenberg goes into her most dramatic film role as a falsely accused murderer in “Time Served,” which starts filming Aug. 8 in Chicago. Based on a true story Oxenberg’s character takes the rap for her son’s murder of her husband, and she’s in a prison where the warden forces the inmates to be hookers. Louise Fletcher’s the warden, Jeff Fahey is Oxenberg’s attorney. Lee Frost directs for producers Paul Pompian and Jack Gilardi Jr. Oxenberg’s deal was set by Darryl Marshak and Doreen Eliassen. … Gil Cates steps down as UCLA’s dean of the School of Theater, Film and TV, Friday after an eight-year stand. He will probably be replaced by Bob Rosen, chairman of UCLA’s Film and TV Dept. and head of the Bruins’ biggest film archives. Meanwhile, Cates is currently busy exec producing “Net Force,” ABC’s four-hour Tom Clancy mini. And, Cates also continues running the Geffen Playhouse, which is anticipating its biggest season … Howcum Eric Braeden was toasted by the N.Y. Yankees Wednesday night before the game with the California Angels at Anaheim? Eric explained to me Sports Illustrated had interviewed him, noting that baseball teams’ favorite pastime when traveling is to watch the soaps. And their favorite is “The Young and the Restless” and their favorite character is Braeden’s’ Victor Newman! He went directly from the “Y&R” set to the stadium. “It’s an honor,” he said — especially since the Yankees are doing so well!” But — Braeden’s a basketball, football, soccer and tennis fan. RAISING THE “TITANIC” TAKE: With NBC and the Discovery Channel airing their new discoveries of the Titanic’s wreckage several times in August, Par and 20th get an added boost for both the feature box office and the video sales. U.S. video is out Sept. 1, international, Sept. 10. The pic continues on 770 screens domestically, with a box office of $593,768,559, and foreign on 1,271 screens and box office of $1,179,791,409 (that’s billion) … Barbara Mandrell and husband Ken Dudney have listed their house for sale at $7,250,000. Located 20 minutes from Nashville, its grandeur is described in detail in the September duPont Registry of Fine Homes … Steve Allen and Jayne Meadows celebrate their 45th wedding anni Friday. Steve penned his 7,500th (!) song, “Tell Me Your Dreams” which he wrote for — Sidney Sheldon’s new novel of the same name. William Morrow’s ordered a first printing of 1 million books … Alan Livingston receives the Lifetime of Laughter Achievement Award Saturday at the Intl. Clown Hall of Fame in Milwaukee. Livingston’s honored for his creation of the legendary character of “Bozo the Clown” 52 years ago for Capitol Records … The UPI’s Vernon Scott is home recuping after triple bypass surgery at St. John’s. He will resume his daily showbiz column on his expected full recovery.