Jumping the shark – its when a TV show strays so far from its orginal premise that the result has nothing to do with anything other than an attempt to garner ratings. From Wikipedia:

Jumping the shark is a colloquialism used by TV critics and fans to denote the point in a television program‘s history where the plot spins off into absurd story lines or unlikely characterizations. These changes are sometimes the result of efforts to revive interest in a show whose viewership has begun to decline. In other cases, the changes have other causes (e.g. an actor quitting, different writers being hired) and the diminished interest is the result. The two causes can feed into each other, leading to even greater changes and even lower popularity. Nonetheless, some series remain profitable and popular long after they have been judged by some to have “jumped the shark”. The phrase has recently come into more general usage, and is applied to cultural phenomena other than television programs.

Man Vs. Wild is the survival TV show which features Bear Grylls in various survival situations explaining how to find food/water/shelter and continue to live. Normally something like this would be very interesting, learning survival techniques etc. But the latest moment from the show seem to be all about grossing out viewers, from eating live snakes and maggots to drinking water squeezed from a ball of elephant dung, its all about topping your self in the name of attracting the gross out ratings. Deviating from survival and nature into the king of the gross out TV. The newest is is Bear teaching that you can get hydration and water from rancid water by giving yourself an enema. This give whole new meaning to the phrase “lie back and think of England” …