CBS spices up a November sweeps week with three musical specials.

Wednesday at 8, Celine Dion invites Gloria Estefan and 'N Sync to guest on her show at New York's Radio City Music Hall. Thursday at 8, Shania Twain's special airs from Texas Stadium in Dallas and includes a video premiere. And Friday at 8, Ricky Martin sings "Livin' La Vida Loca" and welcomes guests Carlos Santana and Jose Feliciano to his show at Liberty State Park in New Jersey, with the Manhattan skyline as a backdrop.

ABC airs the finale of this run of "Who Wants to Be a Millionaire" Sunday at 8, NBC opts for the computer-disaster movie "Y2K" Sunday at 9, and CBS competes with the third edition of "Sarah, Plain & Tall: Winter's End" (see Page 7).

Y2K Sunday at 9 on NBC

Ken Olin plays a Y2K trouble-shooter trying to save the country from disaster on the eve of the new century. Joe Morton plays his boss in this action-adventure that finds chip-driven machinery failing all around the nation.

TWO BABIES: SWITCHED AT BIRTH

Wednesday at 9 on CBS

Melissa Gilbert and Rosanna Arquette play mothers who learn after several years that their babies were switched at birth, then try to protect the relationships between themselves and their children. CBS says the movie was based on actual events, but not on a 1998 Virginia case.

SECRET OF GIVING

Thursday at 9 on CBS

Reba McEntire stars as a down-on-her-luck widowed mother who restores a town's faith in time for Christmas. Ronnie Cox and Thomas Ian Griffith co-star, with Devon Alan as her son. McEntire has recorded new music for this movie.

AMERICAN PROPHET: THE STORY OF JOSEPH SMITH

Friday at 9 on PBS

This two-hour documentary explores the work of Joseph Smith, founder of the Church of Jesus Christ of Latter-day Saints (Mormons), celebrated by his followers but rejected, sometimes violently, by others.

GUESTS OF NOTE

Sunday: Ann Jillian on "Touched by an Angel" at 8 on CBS; Jon Seda on "Third Watch" at 8 on NBC; voices of Garry Marshall and Butch Patrick on "The Simpsons" at 8 on Fox.

Monday: Jo Marie Payton on "Moesha" at 8 on UPN; Jill Clayburgh on "Ally McBeal" at 9 on Fox; former Miss America Tawny Little on "Malcolm & Eddie" 9:30 on WB.

Tuesday: Kevin Sorbo on "Just Shoot Me" at 8 on NBC; Gary Busey on "Shasta McNasty" at 8 on UPN.

Wednesday: Mel Harris on "Dawson's Creek" at 8 on WB; Dick Martin on "Two Guys and a Girl" at 8 on ABC; James Earl Jones on "The West Wing" at 9 on NBC.

Thursday: Elliott Gould and Christina Pickles on "Friends" at 8 on NBC; Cheri Oteri on "Just Shoot Me" at 8:30 on NBC; Bebe Neuwirth and Trevor Einhorn on "Frasier" at 9 on NBC; Maura Tierney and John Cullum on "ER" at 10 on NBC.

THANKSGIVING DAY PARADES

On Thursday from 9 a.m. to noon, let the kids go wide-eyed watching fanciful floats, marching bands and gigantic balloons in the annual holiday parades.

Katie Couric, Matt Lauer and Al Roker host NBC's coverage of the 73rd Macy's parade, with three new helium balloons and casts of three Broadway musicals.

Sharon Lawrence and Alfred Molina host CBS's All-American Thanksgiving Parade, beginning with Doug E. Doug in Times Square, Jo Dee Messina and Michael Park at Nashville's Opryland Aqua Parade, Clarence Gilyard and Karri Turner in Detroit, and Shemar Moore and Miss Universe Mpule Kwelagobe in Honolulu.