i personally despise them all.
Not so much because i'ma Christian, but just because it's horrid entertainment. There's no humour, no true drama, no real action. It's all backbiting, and shock.
That said, none of the shows promote a Christian worldview
We can break down reality shows into 3 categories
1) Fear/Feats
2) Love/Marriage
3) Elimination
The first category, spearheaded by FearFActor and Dog eat Dog all promote recklessness. They instill a sense of defiance of the odds and abandonment of taboo and removal of fears. The Bible teaches us to not tempt the Lord our God, yet if we perform these stunts, is that not what we are doing?
the second category, characterized by Joe Millionaire and the Bachelor make a mockery of the God ordained covenant of marriage. The are selling their right to this beautiful covenant relationship, for the chance to be on TV
The third category, with a following of shows such as Big Brother and Survivor. These teach the lesson that the sneakiest person wins. Rather than promoting love and understanding (as is the Christian way) they tell that if you are loving, you will be eliminated. Compassion (which is essential to a Christian's walk) is a weakness in a survival of the fittest world, and survivor and big brother are survival of the fittest worlds.