When "The Sopranos" and its cast of dozens return this weekend, viewers will do well just to keep all the names and faces straight. As if it weren't enough getting reacquainted with television's favorite extended family after an extended layoff (16 months!), a fistful of new ideas is thrust into the show's fourth season opener, which airs at 8 p.m. Sunday on HBO. Of course, James Gandolfini's Tony Soprano remains the irresistible capo di cable, even if the show's writers lavish some of the best lines of the hour on the supporting cast. Odds are, however, that the catchword fans will take away from this episode will come from Tony's lips: "Conserve!" You'll know it when you hear it. Though "Sopranos" scenes are crowded with characters, Gandolfini breaks through the clutter every time. He's there even when he's not there. When his sister Janice (Aida Turturro) started coming onto one of his captains, for instance, my immediate thought was: What will Tony think of this? Such intrigues make "The Sopranos" special (after all, does anyone still ask, "What will Andy Sipowicz think of this?"). Fortunately, the show's creator, David Chase, seems to have spent his long hiatus finding new chinks in Tony's armor. Old plot devices like those panic attacks that were so debilitating to Tony early on have been pushed aside. One "Sopranos" staple I wish would get whacked is the writers' insistence on working current events into every episode. Webistics, that dot-com sensation, tanked with the rest of the market; instead, we now have Carmela (Edie Falco) badgering her husband to do more financial planning. She accuses Tony, not without reason, of squirreling the family's long-term savings inside a nearby mattress, "or wherever you put it - with zero growth!" It's a barely adequate bit of scene filler, that and a couple of casual invokings of 9/11, and none of it quite rings true. (A family with "no-work jobs" at their disposal is worried about the economy?) In next week's episode - conveniently scheduled opposite the "Sopranos"-free Emmy Awards - inklings emerge that Tony is about to meet his greatest nemesis since his mother, Livia, died. You may not even notice at first, but Tony's pangs of conscience are returning with a vengeance and taking on human form. Her name is Meadow. We already know that Tony is weak-kneed in parental matters (he once agreed to punish Meadow for being a really, really bad girl by taking away her credit card for two weeks). But this promises to be more than that. The seed, you'll recall, was planted at the end of last season with the murder of Meadow's ex-boyfriend Jackie Aprile. The residual tension between father and daughter over Jackie is going to set off a chain of explosions, ending with a family blowup next week. It's a tremendous scene, worthy of that other HBO heavyweight, "Six Feet Under," and it establishes Jamie-Lynn Sigler, who plays Meadow, as one of this show's major players. If the script writers take Meadow where I hope they do, she'll be able to get inside Tony's head in a way his shrink, Dr. Melfi (Lorraine Bracco), simply can't. Liberal education teaches the value of the examined life, and it seems that with each tuition check her father writes out, Meadow moves closer to discovering the source not only of her own pain but her father's. "The Sopranos" is not psychology class, of course. If anything, it's a seminar in advanced screenwriting. Watching Sunday's episode I was amazed how many characters passed effortlessly in and out of scenes: Furio, Artie, Patsy, Paulie, Adriana, Bobby, Silvio ... Chase has figured out how to keep his show percolating while moving the whole wild bunch of them toward whatever diabolical ending he has cooked up. Enjoy it while you can. Chase recently repeated his vow to close up shop after next season, which means that Sunday's episode will leave us with only 25 more visits to "The Sopranos." The quicker clicker "Late Night With Conan O'Brien," weekdays, Comedy Central. Talk shows are being unleashed from their moorings. Morning shows drift into early evening ("The View" repeats on A&E), night owls suddenly appear in the sunshine hours ("Last Call With Carson Daly" on E!), and now NBC offers "Late Night With Conan O'Brien" to the non-drowsy once again. (The network failed to interest CNBC's audience in Conan reruns a while back.) O'Brien and his show's goofy sophistication have remained remarkably consistent over the years. With repeats airing at noon and 6 p.m., now's a great time to discover late-night's best-kept secret, or get reacquainted. "Curb Your Enthusiasm," 9 p.m. Sunday, following "The Sopranos." Oh, yeah, that other HBO show is coming back this weekend, too. Larry David surprised everyone but his devoted viewership this summer when this gem got an Emmy nomination for Best Comedy. Though each episode doggedly follows the same template, the novelty of David's supposedly real-life qualities being ground into comedy hasn't worn off (though for his family's sake you hope that he isn't as obsessive, boorish and utterly corrupted by Hollywood as the guy on the show is). This week, Larry decides he absolutely must have this great shirt he saw - on a dead man. To reach Aaron Barnhart, phone (816) 234-4790 or visit the TV Barn Web site at www.tvbarn.com @ART CREDIT:BARRY WETCHER/HBO @ART CAPTION:A.J. (Robert Iler, left), Tony (James Gandolfini) and Carmela (Edie Falco) gather around the kitchen counter for family time. @ART CAPTION:Conan O'Brien's late-night show will be shown in repeats. @ART:Photos (2)