.: Fight Quest

Welcome to Fight Quest , airing Fridays at 10 p.m. ET/PT starting Jan. 4. A blend of cultural immersion and good old-fashioned smackdown, the series follows seasoned mixed martial arts fighter Jimmy Smith and 25-year-old rookie Doug Anderson as they travel the globe, adding fight styles from Kali to kickboxing to their repertoire.

In each episode, Jimmy and Doug will explore a new location identified with a style of fighting, such as kung fu in Dengfeng, China, and boxing in Mexico City, Mexico. There, after first immersing themselves in the sounds, smells and tastes of the local scene, the two guys will separate to train with local masters of that method -- sometimes an ancient art of combat, and other times a modern form of butt-kicking. After several days of intense instruction, Jimmy and Doug will each face off against a local in a no-holds-barred test of skill.

The fighting is real. The injuries are real. In the end, only the best will win.

.: Dirty Jobs

Stuck in a dead-end job? Daydreaming about a new career? Combing through the classifieds for your next calling? Well, what about these jobs?

Roadkill Collector : Must be able to work long hours braving oncoming traffic while picking up creatures of various size and breed and in various states of decay. Benefits include working outdoors. Strong stomach a plus.

Catfish Noodler : In search of people who can catch potentially 100-pound catfish with their hands only. Must not mind sticking limbs in holes in search of game and getting bitten as a result.

Welcome to Dirty Jobs , the new Discovery Channel series that profiles the unsung American laborers who make their living in the most unthinkable — yet vital — ways.

Our brave host and apprentice Mike Rowe will introduce you to a hardworking group of men and women who overcome fear, danger and sometimes stench and overall ickiness to accomplish their daily tasks. Not one to just stand by, each week, Rowe will assume the duties of the jobs he's profiling, working alongside rattlesnake catchers, fish processors, bee removers, septic-tank technicians and other professionals: average folks tackling extraordinary tasks that simply must get done.

But you'll walk away from Dirty Jobs with more than just a glimpse into unfamiliar occupational duties — serving slop to pigs, collecting sperm from stallions and removing bones from fish, for example. If you're like us, you'll also gain a new understanding and appreciation for all the often-unpleasant functions someone is shouldering to make your everyday life easier, safer — and often cleaner.

Don't take our word for it; see it for yourself. Join Mike as he takes on these Dirty Jobs each week, Tuesdays at 9 p.m. ET/PT .