For the popular Discovery Channel series Dirty Jobs, currently in its fourth season, host and everyman Mike Rowe gets the grimy scoop on downright nasty occupations that make civilized life possible for the rest of us.

Working alongside those whose professional callings are less than appealing, Mike proves beyond a shadow of a doubt that there's no task too horrendous for him to tackle. Having performed more than 175 distinctly revolting jobs, Mike continues to explore alternative livelihoods that make the other half of us appreciate our desk jobs.

From birthing cows and inseminating turkeys to cleaning caves, this season of "Dirty Jobs" promises to be dirty as ever. All new episodes begin Monday, April 14 at 9pm ET/PT on Discovery Channel.