What do you think about Jennifer Lopez joining American Idol?

I think it's awesome because after a year we'll finally have a judge that'll know what their talking about. And I think she can bring back some of that funny and likable personality that Paula had. I was totally not going to watch Season 10, but then I heard J Lo was going to be Ellen's replacement and I got interested again. But what do you think? Also what do you think of Steven Tyler replacing Simon Cowell? Or would you rather have Harry Connick Jr, Elton John or P. Diddy as Cowell's replacment?