Big Brother

Big Brother 12
9/8c CBS
One of the final three houseguests — Enzo, Hayden, Lane — will be crowned the Big Brother champion tonight and awarded the $500,000 grand prize. But first Hayden and Lane will square off to determine which one will become the season's final Head of Household, who will then send one of the other two Brigade members packing. The last two standing will face the jury for questioning before the deciding votes are cast. — Tim Holland

Survivor: Nicaragua

8/7c CBS
Former Dallas Cowboys coach Jimmy Johnson is one of the 20 new castaways who are stranded in Nicaragua for the show's 21st season. Johnson is part of the 10-member Espada tribe that is made up of people over age 40. The other 10 participants are on the La Flor tribe, which consists of players ages 30 and under. Who knows how long the Super Bowl-winning coach will last but, love him or hate him, he promises to be one of the game's tougher competitors. "How 'bout them castaways!" — Tim Holland

America's Got Talent
8/7c NBC
Recently renewed for a sixth season, the peacock network's hot talent contest finds its long-and-winding fifth cycle coming to a close. The two-hour season finale, accented by performances by an array of Las Vegas and Hollywood stars, features the crowning of the winning act. So, after performing for the last time in last night's penultimate episode, the final fab four — singers Prince Poppycock, Michael Grimm, Jackie Evancho and performance crew Fighting Gravity — anxiously await the verdict on who will win $1 million and a headlining show in Vegas. — Dean Maurer

MasterChef
8/7c Fox
After weeks of intense competition, Gordon Ramsay announces the winner of this high-stakes culinary contest in a two-hour season finale. Hundreds of hopefuls had their chances at $250,000 and a coveted cookbook-publishing deal, but the field has been whittled down to David, Lee, Sheetal and Whitney. Tonight only one wannabe chef from this quartet walks away with the title of "America's Best Home Cook." — Karen Andzejewicz

Dark Blue
9/8c TNT
Executive producer Jerry Bruckheimer's hard-edged crime series closes its second season with two back-to-back episodes. In the first mission, stubbled tough-guy Carter Shaw and his covert crew slither into the undercover shadows to take down two drug-smuggling brothers who are using a flower business as a cover for their dirty deeds. Although the case may wither due to Homeland Security interference, there's some flowering of sorts when Dean asks Jaimie on a proper date. In the second episode, the squad aims to crush a terrorist scheming to smuggle dirty-bomb components into the U.S. — Dean Maurer

Outlaw
10/9c NBC
Here comes the judge: Jimmy Smits headlines this new legal drama and holds court as Justice Cyrus Garza, a playboy gamblin' man who quits his Supreme Court post and returns to private practice, crisscrossing the country with his legal team to handle controversial cases. In the premiere, Garza's will and legal fortitude are tested when he aims to free a condemned client from death. Series stars include Jesse Bradford, playing a newbie law clerk with a conservative streak; David Ramsey as an attorney holding liberal views; and Carly Pope as a private eye with a sassy, sexy flair. — Dean Maurer

Ultimate Fighter: Team GSP vs. Team Koscheck
10/9c Spike
Season 12 of the reality-competition series brings 28 lightweight mixed-martial-arts fighters into the house to vie for a six-figure UFC contract. With appearances by UFC head honcho Dana White, the fighters will be split into teams, which will be coached by Georges "Rush" St-Pierre and Josh "Koz" Koscheck, a semifinalist in Season 1. The coaches will face off in the traditional postseason battle, this time in Montreal at UFC 124. — Brendan Curley