Christine Tarbet of Youngstown, Ohio returns to try and finish off the mob, and Aaron Sanderlin of Brooklyn, New York and Chaz Hales of Las Vegas, Nevada try their luck to outsmart the mob, which includes brain surgeons, Mensa members and Los Angeles Clippers cheerleaders.

Camielle Bennett of Augusta, Georgia, Portia Peters of South Holland, Illinois and Ed Brown of Afton, Wyoming try their luck to outsmart the mob, which includes psychics, perfect SAT scorers and punk rockers.

Ed Brown of Afton, Wyoming, returns to try and finish off the mob, and Kelly Ross of Oak Park, California and Monique Soltani of Hollywood, California try their luck to outsmart the mob, which includes Guinness Book of World Records title-holders, summa cum laude graduates and a trivia champion nun.

Monique Soltani of Hollywood, California returns to try and finish off the mob and Jonathan Kehoe of Cherry Hill, New Jersey tries his luck to outsmart the mob, which includes beauty queens, sanitation workers and Trekkies.

Jay Stakelon of Allentown, Pennsylvania will play for a special top prize of $3 million by trying to outsmart the mob, which includes rapper Kevin Federline, "Las Vegas" cast members (Josh Duhamel, Nikki Cox, Molly Sims and James Lesure), as well as poker champ Annie Dukes, casino dealers and showgirls. In addition, Paula Russell of Chicago, Illinois will play for a top prize of $1 million as she battles wits with the mob that includes World Series Champion MVP David Eckstein of the St. Louis Cardinals, and game show host legends Wink Martindale and Bob Eubanks.

Keikabou Holland of Washington, DC will play for a top prize of $1 million by trying to outsmart the mob, which includes spelling bee champions, waitresses from Hooters and janitors.

In tonight's special Christmas episode, some of the mob members include 12 drummers, nine dancers and a partridge in a pear tree.

Cari Sudmeier of Palm Desert, California and Barry Lander of San Diego, California will play for a top prize of $1 million by trying to outsmart the mob, which includes Rhodes Scholars, drag queens and Adam West.

Barry Lander of San Diego, California returns to try and finish off the mob and Kwame Horne of Detroit, Michigan will play for a top prize of $1 million by trying to outsmart the mob, which includes infomerical millionaires Matthew Lesko and Anthony Sullivan, child geniuses and Fabio.

Kwame Horne of Detroit, Michigan returns to try and finish off the mob and Shelly Rego of Sommerville, Massachusetts and Radjiv Ladva of Birmingham, England will play for a top prize of $1 million by trying to outsmart the mob, which includes Dallas Cowboy Cheerleaders and famous child stars Todd Bridges and Willie Ames.

Radjiv Ladva of Birmingham, England returns to try and finish off the mob and Janice Carlton of Fort Dix, New Jersey will play for a top prize of $1 million by trying to outsmart the mob, which includes morticians, gymnasts and popular daytime soap stars Alison Sweeney, Bryan Dattilo and Julie Pinson of "Days Of Our Lives," and Galen Gering, Eva Tamargo and James Hyde of "Passions."

Mitch Mishke of Telluride, Colorado will play for a top prize by trying to outsmart the mob, which is comprised of super-smart kids. Joining kid mogul Jason O'Neill of Pencil Bugs and kid "Jeopardy!" champion Madeleine Suchard are assorted kid science fair winners, kid spelling bee champions and kid Mensa members. Also, Actor/comedian D.L. Hughley joins the mob for Wendy Powell of Las Vegas, Nevada's game.

In a very special episode, the 100 mob members square off against each other for a grand prize of $250,000. This time, the "one" will be selected from the mob and the game will continue until there is only one mob member left standing. In this battle of intellect and guts, there are no lifelines, no chance to take the money and run, and no choice but to keep going until someone walks away with a quarter of a million dollars. Members of the mob include game show heavyweights from "Jeopardy!" (Ken Jennings and five-time champion Brad Rutter) and from "Who Wants to Be A Millionaire" (former champions Nancy Christy and Kevin Olmstead). They are joined by poker great Annie Duke, Ivy League graduates, rocket scientists, trivia bowl champions and a nun. Also in tonight's episode, Raul Torres, Jr. of Van Nuys, California will play for a top prize of $1 million by trying to outsmart the mob, which includes Hawaiian Tropic Girls and paparazzi.

Raul Torres, Jr. of Van Nuys, California returns to try and finish off the mob and Casey Smith of Des Moines, Iowa will play for a top prize of $1 million by trying to outsmart the mob, which includes IRS auditors, DMV employees, telemarketers, and meter maids.

Joanne Uy of Northridge, California, Herman Wilkins of Chicago, Illinois and Lou Siville of Shiloh, Illinois will play for a top prize of $1 million by trying to outsmart the mob, which includes real-life "Medium" Allison DuBois, celebrity blogger Perez Hilton, Academy Award-winning hip hop group Three 6 Mafia, popular sex therapist Dr. Ruth Westheimer, and Playboy Playmates.

Carolyn Granado of Carlsbad, California and Andrew Murray of Stony Point, New Jersey will play for a top prize of $1 million by trying to outsmart the mob, which includes Rabbi Shmuley of "Shalom in the Home," cowboys, used car salesmen and Harvard professors.

Mike Korich of Dacula, Georgia and Heather Spanbauer of Modesto, California will play for a top prize of $1 million by trying to outsmart the mob, which includes real-life ghost hunters, roller derby girls, belly dancers, prison guards and people struck by lightning.

Shannon, a morning show radio host of Louisville, Kentucky, will play for a top prize of $2 million, by trying to outsmart the mob, which includes original "Grease" cast members Jeff Conaway and Susan Buckner, members of the rock 'n' roll band Sha Na Na (Reggie, Donny York, Jocko and Screamin' Scott), as well as "The Apprentice" alumni - - Omarosa, Kelly Perdew and Sean Yazbeck.

One woman, Kathryn Cazorla from Elmira, New York, will compete against 100 men and one man, Jason Luna of San Diego, California, will compete against 100 women to determine who is the smarter sex.

Debbie Holden from Baltimore, MD and Joe Lorenzo from Brooklyn, NY are introduced to their mob who include regulars, Sommore, Ross Mathews, Richard Rubin, Oscar the Grouch and the Dahm Triplets.

Joe Lorenzo from Brooklyn, NY returns to finish his game in an attempt to beat the mob and Chicago, IL native Sarah Greene gets her chance to battle for the grand prize.

The smartest man in America, Christoper Langan from Bozeman, MT tries to use his smarts to win the million-dollar prize. Single mother Rosemarie Pesci from Temecula, CA takes on the rowdy mob.

Kristin Moran from Villa Park, CA takes a chance against the mob including a special member, Jake the chimp, for her chance to win the grand prize. Robert Macklin from San Francisco, CA challenges the mob.

Tim Murdock from Hilliard, OH competes against the energetic mob. Contestant Clint Tausher from Los Angeles, CA is confident that he is better at pop culture knowledge then the mob.

Pop culture savant, Clint Tausher from Los Angeles, CA returns to finish his game to compete for the grand prize. Beauty queen, Cassandra Whitehead from Houston, TX works her magic against the mob.

Sarah Greene from Chicago, IL returns to play the game and tries to outwit the mob. Eric Smart from Los Angeles, CA takes the challenge of facing the eager mob members.