well i guess im gonna have to add Top Ger to this list.
It would not have surprised me if they somehow worked out how to pull the plug on this later this year when they had to sort out contracts with the 'stars' again.
Yes it made allot of money, but it wasn't a cheep show to make. And viewership was falling.. Also ending it before 'its time' keeps a element of value to the brand that they will be able to milk for a many years without the cost of making new episodes.
I was supprised it happened, but I was expecting it to end in 2011...