I know this kind of stuff suits more for the Game Subforums but this is a good challenge; it'll help me improve my skills as a Game Master. Don't worry. I found a way to RP Big Brother and Survivor. Look, how about this.
For Big Brother, you judge other House mates by their ability to RP (i.e. post lengths, descriptions, spelling, etc.) then depending on how good they are, you evit/nominate them. So, the winner is the best at RP-ing. Players nominate/evit by PM-ing their choices. The evitees can hang around at a nearby alternate Big Brother House for evitees.
Personally I don't like Big Brother because people can get REALLY feisty and deceitful in this game. But everybody gets feisty in competitions anyway...
For Survivor, I'll keep the challenges simple and easy. The winner, is yet again, the person with the best RP-ing skills as if I think you're not good enough, I'll purposely RP your character and make you fall and trip over or something and allow the other participator to win.
My personal favourite is the Amazing Race. I think Renegade pointed out all the reasons why. Plus it's my favourite show. Look, I've seen even harder and worse things get turned into RPGs. Turning Game Shows into RPGs will be a real test of my abilities. I want to try this out; nobody here had really tried this idea before. I want to prove that this is possible. Hell, I've seen worse. In one Forum, I've seen House turned into a RPG. Even more unbelievable, I've seen Desperate Housewives turned into a RPG and that's like nearly impossible. And do you believe that the Desperate Housewives RPG was actually a sucess? Amazing things can happen if you think about; all you have to do is try.