Tanked : Season 7

In the season premiere, actor David Hasselhoff wants an aquarium that recalls his time on "Baywatch" and "Knight Rider," and the job includes an inspirational trip to the Aquarium of the Pacific in Long Beach, Cal.

Magicians Penn and Teller request an aquarium for their backstage greenroom to commemorate their 40th anniversary.

Sherri Shepherd on the Rocks (Repeat, TV-PG) Actress and TV host Sherri Sheppard wants a simple but elegant tank for her home, so she contacts Wayde and Brett and asks them to build it for her.

Comedian Bill Engvall wants a Zen-like aquarium for his new office in Hollywood, but the plan could be derailed by weight restrictions. Also: The team build a tank for magician Penn Jillette's Las Vegas home that includes fish, lizards and insects.

Former Guns N' Roses guitarist DJ Ashba requests a skull-theme aquarium.

Boyz II Men's Nathan Morris requests a custom aquarium that will sit inside an old fireplace. Also: Wayde and Brett install a 1000-gallon tank for an octopus exhibit at the Greensboro Science Center in North Carolina.

The NBA's John Wall requests an aquarium shaped like a giant pair of dice. Meanwhile, the ATM team goes to Georgia to build a lighthouse aquarium for a seafood restaurant that features engravings of dolphins.

Chicago Bulls star Jimmy Butler wanted a fish tank, but he didn't want some ordinary, regular fish tank. He wanted a boombox fish tank. That's just what the hosts of Animal Planet's Tanked gave him. The show, which hooks people up with unique fish tanks and aquariums, gave Butler the one-of-a-kind tank right in his home.

A look back at some of the unforgettable tanks inspired by moments in history.

ATM rings in the holiday season as Wayde and Brett each try to out build one another in the world's first ever Tank Off! The competition between then heats up as Jackass creator Jeff Tremaine returns to judge who built the most badass tank!

Sea-life painter Guy Harvey enlists ATM to build a nearly 40,000-gallon aquarium for the Trade Winds Resort in St. Pete Beach, Florida that guests can dive into; the General threatens to retire after the way he is treated in Las Vegas.

Basketball superstar Shaquille O'Neal wants a Shaq-sized aquarium built into a semi-truck's front end.

Baseball legend Pete Rose asks the boys to build a giant Riverfront Stadium aquarium, but his fiance Kiana will not allow it to be built in the house; Wayde and Heather build a large tank in Horry County, South Carolina.

Long Island medium Theresa Caputo and her husband, Larry want two major builds for their home; an outdoor pond and a 325-gallon aquarium with a mystical mermaid and glowing coral to be built within a room-dividing wall.

California family wants a medieval tank filled with crystals, gems and a dragon on top to guard their treasures; owners of military replica store taps the ATM crew for a WWII army tank tank.

Drag queen Frank Marino wants an over-the-top bed tank for the Vegas bedding store Holy Sheets; Brett gets distracted looking for buried pirate treasure as they are supposed to build a tank for a pirate ship in Perdido Key, Florida.

Drag queen Frank Marino wants an over-the-top bed tank for the Vegas bedding store Holy Sheets; Brett gets distracted looking for buried pirate treasure as they are supposed to build a tank for a pirate ship in Perdido Key, Florida.

Wayde and Brett head to the Royal Blues Hotel in Florida to build a 1,500 gallon tank into the restaurant ceiling that would also be visible from the pool; then off to Seattle to build a tank for Henri the Cat.

From rare sea creatures and exotic fish to feisty crabs, Wayde and Brett share some great stories about the coolest and craziest fish they've ever built tanks for.

ATM crew join forces with Mario Lopez of 'Saved by the Bell' fame to turn a 90's coin operated video game into an interactive aquarium with an exercise bike.

ATM builds a tank for "That '70s Show" and "Handy Manny" star Wilmer Valderrama with slanted sides and multiple angels; health center in Grand Rapids, Mich., wants a Grand Rapids tank.

Wayde and Brett take a look at the current state of some of their greatest tanks; fire at a Malibu Winery causes damage to their outdoor aquarium; Jackass producer Jeff Tremaine is having troubles with his eels.

Wayde and Brett build a beefed-up tank for jerky storage and a pub-themed tank for an Irish family bar as they celebrate the holiday season.

In Pigeon Forge, Tenn. The Hatfield and McCoy's Dinner Theater wants an aquarium in place of an old moonshine still; an anatomically correct eye ball tank is the task put forth by a Las Vegas optician.