Episode 621

The Mega-Brands That Built America is the newest series in History's "That Built" franchise, telling the origin stories of some of the most successful businesses in history: from mega-stores like Costco and Walmart to sporting goods giants like Spalding and Wilson, titans like Ivory Soap, Schick and Gillette, to shipping giants like Fedex and UPS, and countless more of the biggest brand names in history. Each story is told through the "That Built" franchises' signature blend of expert interviews and archival, mixed with original premium recreations. Through the eyes of the visionaries and entrepreneurs behind the brands, the series takes viewers on a journey; starting with how it all began, following the innovations, the failures, and all the incredible achievements that forever changed the way Americans live. It's everything you didn't know about the colossal brands you know so well.

Set in the middle of the jungle, "The Challenge: War of the Worlds 2" returns to a classic team format; 14 Brits will battle it out against 14 Americans for their share of the $1 million-dollar prize.

WWE Monday Night RAW is World Wrestling Entertainment's (formerly the WWF and the WWWF before that) premiere wrestling event and brand. Since its launch in 1993, WWE Monday Night RAW continues to air live on Monday nights. It is generally seen as the company's flagship program due to its prolific history, high ratings, weekly live format, and emphasis on pay-per-views. Monday Night RAW is high profile enough to attract frequent visits from celebrities who usually serve as guest hosts for a single live event. Since its first episode, the show has been broadcast live or recorded from more than 197 different arenas in 165 cities and towns in seven different nations: including the United States, Canada, the United Kingdom twice a year, Afghanistan for a special Tribute to the Troops, Germany, Japan, Italy and Mexico.

Shark Week is an annual, week-long TV programming block created by Tom Golden at the Discovery Channel, which features shark-based programming. Shark Week originally premiered on July 17, 1988.

With the talent search open to acts of all ages, America's Got Talent has brought the variety format back to the forefront of American culture by showcasing performers from across the country. The series is a true celebration of the American spirit, featuring a colorful array of singers, dancers, comedians, contortionists, impressionists, jugglers, magicians, ventriloquists and hopeful stars, all vying for their chance to win America's hearts and the $1 million prize.