Takeshi's Castle is in the US in the form of MXC, or the Most Extreme Elimination Challenge, a gleefully raunchy spoof of the Japanese humiliation-based gameshow. It's shown by Spike TV, which bills itself as the First Network for Men and uses that billing as an excuse to show really gross shit. Most of it's simply stupid, but MXC is superbly, absurdly funny.
It isn't the original Japanese show in anything but the visuals. All the voices are original to MXC (and usually full of double-entendres), all the characters and contestants are renamed, and they do as much as they can to make it disgusting as well as violent.