I get to see bits and pieces of it. It comes on at 7:30, right after Wheel of Fortune, which is my 5 year old's favorite non-Disney/cartoon show. Then we read to her and she goes to bed about 7:45, so I only get to see the first round, if that. The intellectual whiplash of those two shows being back-to-back is almost too much to bear, though. Sometimes I get dizzy.
As for the "dumbing down" of the questions/answers on Jeopardy, I prefer to believe that I'm getting smarter.