WORTH NOTING ON TV

* SUNDAY

Super Bowl XXX (NBC, 6-10 p.m. EST): America's most-hyped sports event, held this year at Sun Devil Stadium in Tempe, Ariz., celebrates its 30th anniversary. Meeting for the third time on Super Sunday are the Dallas Cowboys and Pittsburgh Steelers - both four-time Super Bowl champions.

Over the years, various sideshows have become nearly as important as the game itself. This year the half-time extravaganza is led by Diana Ross, and Vanessa Williams will sing the national anthem. Even the commercials have become a spectacle, with a coveted 30-second spot costing $1.3 million. (See Tempe, Ariz., scene-setter, Page 1; team overviews, Page 10.)

NBC is aiming for a ratings bonanza by airing a much-talked-about one-hour episode of Friends (NBC, 10-11 p.m.) immediately after the game. Chris Isaak, Julia Roberts, Brooke Shields, Jean-Claude Van Damme, and Marcel the monkey make special appearances.

Intimate Portrait: John F. Kennedy Jr. (Lifetime, 8-9 p.m.): For those not into the Super Bowl scene, Lifetime is offering what it is dubbing a ''Super Hunk'' episode: a profile of John F. Kennedy Jr., the first male the biography series has featured. The program looks at the charismatic son of President Kennedy and Jacqueline Kennedy Onassis.

* MONDAY

American Music Awards (ABC, 8-11 p.m. EST): Lionel Richie will premiere ''Don't Want to Lose You'' at the 23rd American Music Awards. The show also features Brandy, Garth Brooks, Mariah Carey, LL Cool J, Reba McEntire, Smashing Pumpkins, Shania Twain, and Luther Vandross.

The American Experience (PBS, 9-11 p.m.): This documentary, ''The Battle Over Citizen Kane,'' was scheduled to air this month at the Sundance Film Festival. It tells the story behind Orson Welles's film ''Citizen Kane'': how the brash filmmaker's thinly veiled portrayal of publishing giant William Randolph Hearst got the attention of the magnate, who was largely successful in snuffing out the film.

Please check local listings for these programs.