The wave of new shows keeps rolling. Mark Cuban hopes to trump that other workplace reality show with "The Benefactor." Showtime offers "A Separate Peace." On ABC, Barbara Walters recalls 25 years on "20/20," while NBC's Maria Shriver talks to Roy Horn. HBO offers "American Splendor." Miss America will be crowned on ABC. National Geographic Channel unleashes "The Dog Whisperer." And the WB's "Jack & Bobby" features the life of a president -- in office decades from now.

PEPSI'S PLAY FOR A BILLION

Sunday at 8 p.m. on ABC

A chimpanzee will help one lucky finalist try to become a billionaire on this giveaway show.

Two hundred contestants who have been busy entering the contest via Pepsi products and promotions are vying for the chance to take home a $1 billion payoff. Mr. Moneybags, the chimpanzee, will randomly choose a six-digit number and if it matches the six-digit number chosen by one of the contestants, that lucky person gets the prize.

Hosted by Damon Wayans and Tom Bergeron, the program will feature a musical performance by Destiny's Child.

Mystery!

The Inspector lynley Mysteries:

In the presence of the enemy

Sunday at 9 p.m. on PBS

The second of four new episodes of the series finds Lynley, played by Nathaniel Parker, unraveling the the kidnapping of a secret love child.

When the 10-year-old daughter of a radical labor minister is abducted, the ransom note demands that the identity of the child's illegitimate father -- a conservative tabloid editor -- be revealed.

But before the girl's parents take any action, the child's body is found and the son of the editor is kidnapped.

Lynley and his sleuthing partner Barbara Havers, portrayed by Sharon Small, must race to find the murderer before another child dies.

Siegfried & roy: the miracle

Wednesday at 9 p.m. on NBC

Roy Horn, half of the legendary entertainment duo known for wild animal acts, was mauled by Montecore, a white tiger, just over a year ago during an onstage performance.

Subsequently he suffered a stroke, and his recovery process has been slow.

In this special, Horn will talk to Maria Shriver about the accident and his recuperation. The show, filmed over several months, includes footage of the accident, interviews with Roy's doctors, witnesses and entertainers close to the pair.

Siegfried Fischbacher also is interviewed about his friend and partner.

The question of god

Wednesday at 9 p.m. on WETA;

10:30 p.m. on MPT

This two-hour show ponders cosmic questions such as what is happiness, does God really exist, how do we cope with suffering and death, and is there such a thing as evil.

Based on a popular course at Harvard University, taught by Armand M. Nicholi, the show explores the struggles and minds of two of the 20th century's most original thinkers, Sigmund Freud and C.S. Lewis.

Psychoanalyst Freud was a lifelong critic of religious belief while literary critic Lewis was a proponent of faith based on reason. The show ends with another two-hour episode next week.

The O.C.: Obsess completely

Thursday at 8 p.m. on Fox

After last season's cliffhanger, you may be counting the days till the Fox drama returns on Nov. 4. This special, plus another next week, should soothe your pain.

Both shows offer an inside look at the making of the series, with previously unseen footage, bloopers and interviews with cast members and the show's creator, Josh Schwartz. A preview of the season premiere will also be included.

MISS AMERICAN PAGEANT

Saturday at 9 p.m. on ABC

The event has a new twist: The final two contestants will square off in a live talent showdown.

Host Chris Harrison also will serve as a guide to a live look backstage as the participants prep and primp for their shot at the crown Ericka Dunlap has worn all year.

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