When you've got "Who Wants to Be a Millionaire?" you don't need much else. Which explains why ABC has as many new shows — four — as it will have weekly editions of the hit quiz show in the fall.

A regular Wednesday installment of "Millionaire" will join the Sunday, Tuesday and Thursday editions already in place.

That means ABC will actually have only 2 1/2 hours of new shows in the fall, which is all but unprecedented for a major network. And it won't begin new programming until October, after NBC's coverage of the Summer Olympics ends.

As expected, ABC has jettisoned its "T.G.I.F." strategy on Fridays, tossing out kid-friendly programming for "adult" humor like "Two Guys and a Girl" and "Norm."

The Wednesday edition of "20/20" is being renamed "PrimeTime Thursday" and (you guessed it!) is moving to Thursdays.

After being roundly criticized for its handling of "NYPD Blue" this season, ABC programmers will repeat what turned out to be a very successful ratings ploy next season. "Once and Again" will return on Tuesdays at 9 p.m. in the fall, moving to Mondays at 9 p.m. in January (after the end of "Monday Night Football"). "Blue" will return for its eighth season on Tuesdays at 9 p.m. in January, allowing it another uninterrupted run of original episodes.

ABC's new shows are:

Geena (Tuesdays, 8:30 p.m.) is a sitcom that stars Geena Davis as a career woman who falls in love with the widowed father of two (Peter Horton of "thirtysomething").

Gideon's Crossing (Wednesday, 9 p.m.) is a drama that stars Andre Braugher ("Homicide") as a crusading doctor.

Madigan Men (Fridays, 8:30 p.m.) is a sitcom that stars Gabriel Byrne as a divorced man who is re-entering the dating world along with his 16-year-old son and widowed father.

People Who Fear People (Fridays, 7:30 p.m.) is a sitcom about a guy who is convinced the world is out to get him — and it just might be.

ABC also announced three midseason replacement shows, all sitcoms. The Joan Cusack Show casts Cusack as a woman afraid of commitment. Leary casts Denis Leary as a jaded New York cop. And My Wife and Kids stars Damon Wayans as a family man whose life is spinning out of control.

Among the shows ABC canceled is "Sports Night," although there are reports that it could end up on HBO. Others getting the ax include "Boy Meets World," "The Hughleys," "It's like . . . you know," "Odd Man Out, "Oh, Grow Up," "Snoops," "Talk to Me," "Then Came You," "Wasteland" and "Wonderland." "Sabrina the Teenage Witch" is moving to the WB.

AND ON THE WB: The Frog network is adding six shows, but only four of them are new — in addition to "Sabrina" from ABC, the WB is picking up the animated "PJs" from Fox.

"The Jamie Foxx Show" will return to the network in the fall but only for 12 episodes (bringing it to 100 total, which is important for syndication). At that point, Foxx will star in a sketch comedy/variety show on the WB.

And the network is planning to have "Felicity" and "Jack & Jill" share the Wednesday-at-8 p.m. timeslot. "Felicity" will air 11 consecutive new episodes, followed by 13 episodes of "J&J," followed by 11 more episodes of "Felicity."

The WB's new shows are:

Hype (Sundays, 8 p.m.) is a half-hour sketch comedy show.

Nikki (Sundays, 8:30 p.m.) is a sitcom that stars Nikki Cox as a Las Vegas dancer married to a professional wrestler.

Gilmore Girls (Thursdays, 7 p.m.) is a family drama/comedy about a 32-year-old mother, her 16-year-old daughter and her parents.

Grosse Point (Fridays, 7:30 p.m.) is a half-hour comedy/satire about the behind-the-scenes action at TV's hottest teen drama. From the creator of "Sex and the City."

The WB's midseason replacement show are Dead Last, an hourlong comedy/thriller about a rock band that has the power to see ghosts, and The Oblongs, an animated comedy about a warped family.

Among the shows the WB canceled are "Brutally Normal," "D.C.," "Mission Hill," "Movie Stars" "Safe Harbor" and "Zoe."

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