With Arnold Schwarzenegger as the new boss, the celebrities get right down to business with tasks from Tyra Beauty and Trident gum.

Season 12 of Donald Trump's business-savvy series opens with 18 celebrity players creating and selling deli sandwiches. The star contestants include Arsenio Hall, Clay Aiken, Cheryl Tiegs, Debbie Gibson, Adam Carolla, Lisa Lampanelli and Penn Jillette.

The teams are on their best behavior when Joan Rivers and Ivanka Trump serve as Boardroom Advisors for the first task. Each team must build an Ivanka Trump-Nordstrom shoe boutique inside a Media Truck and throw an outdoor marketing event to launch the new Ivanka Trump "Power Up" Campaign. The gloves come off in this boardroom, and Mr. Trump knocks another Celebrity out of the competition. In the second hour, the teams create a viral video to promote the Chock full o'Nuts new single serve coffee cups. Two teammates have an all-out cat fight on the streets of New York City, and in the Boardroom, the tension mounts until Mr. Trump sends another Celebrity packing.

The remaining celebrity contestants must create awareness for a footwear company's shoe-donation campaign. One celeb steps up the drama by defecting to the other team. But is that defector actually serving as a spy? Ivanka Trump and Donald Trump Jr. are the project overseers.

Season 13 opens with 14 returning celebrities tasked to sell meatballs in a charity competition, but there are beefs due to a power struggle and an unorthodox approach to the mission. Stars include Trace Adkins, Stephen Baldwin and Gary Busey.

While members of the men's team further their rivalry, the women argue over who should be the model for a photo shoot; project managers try to raise the most money for charity by selling wedding dresses.

The teams are asked to create a "photo bomb" and a hashtag campaign; the teams must write a 30-second beverage jingle' Trump makes a shocking decision.

The celebrities must create a live health segment showcasing a grape juice with the teams producing and editing viral videos for a new King's Hawaiian product.

Donald Trump returns for an eighth season in the boardroom. Joining him are fourteen new celebrity candidates vying for the title of the Celebrity Apprentice, as well as $250,000 for the charity of their choice. First up, a bake sale featuring cupcakes in a challenge to sell the most, despite culinary challenges and a surprise taste test.

Fallout from a previous boardroom session results in one celebrity launching an emotional tirade and another one going missing. As for the challenge, the players must write, direct and produce a 60-second commercial for an entertainment Web site.

The remaining celebrities create original puppets for Henson's "Stuffed and Unstrung."

The celebrities must fashion an in-store display and create a slogan for a new fragrance. Business snafus unfold when two project managers spar and one team frets about an indecisive leader.

The stars must write and perform a 90-second jingle for a roadside-assistance program. But the task lacks harmony when mutinies and internal power plays mar both teams.

The teams jet to Universal Orlando Resort in Florida to produce an interactive 3-D photo experience, but an indecisive project manager and a tyrannical leader mar the mission.

The all-star celebrities must perform a soap-opera scene for a beverage-mix product. One team doesn't mix well, however, when a project manager tangles with an insubordinate member.

The celebrities are tasked with creating original, three-dimensional artwork. But winning the task comes down to fundraising, and one contestant struggles with bringing in enough money to keep the team safe in the Boardroom. Meanwhile, the other team's Project Manager has to deal with a teammate who over-promises and under-delivers.

When tasked with creating an interactive travel expo for South Africa Tourism, the All-Stars find a former competitor now on the other side of the boardroom table. Down in numbers, one team tries to get the task done with a lame teammate, while the other team's project manager drops the reigns and their concept gets out of control.

The celebrities are assigned to write, produce and direct a commercial. Later, they preside over a presentation and a tasting menu featuring frozen-food products.

Some of the best moments from the series include hirings and firings, feuds and the biggest mistakes.

The two remaining finalists complete their last task with some help from eliminated contestants; Donald Trump announces the season 14 winner.

The two teams are each given a "Jet Stream" trailer to transform into a mobile campaign to promote and sell Kodak products. The pressure builds when Hydra damages their computer and Empresario misses out on a meeting with the executives.

Both teams sell works of art by artists they have selected.

The celebrities challenge is to take over a ritzy hotel, which will include answer to the guests every beck and call, clean the rooms, manage concierge affairs and delivery room services. But this task does not bold well for an out-of-control manager and unhappy guests.

Donald Trump divides the celebrities into men versus women and instructs them to choose a team name and in a surprise twist, Trump asks them to choose the opposing team's project manager. For their first task they must run a New York City diner. The team who brings in the most money at the diner, including tips, wins. It isn’t long before the celebrities’ egos clash as they compete to see who will be the first celebrity to face Mr. Trump in the boardroom and hear the words "You’re fired."

The teams produce and perform a medieval-theme show for an audience, yet an insubordinate contestant and a serious injury mar the task.