My job, I think, is the hardest job out of all the judges because I am the only one that is a performer.

I can't wait to be back on the dance floor. I feel really good about it.

Thousands of kids and parents come up to us and say, How do we get better as a singer?

Can you imagine Simon as a kid? His imaginary friends probably never wanted to play with him.

If you lose a parent, it never goes away. As a kid, I dreamed about my father coming back for 15 or 20 years. I still do sometimes.

I believe Dad will be respected in 300 years, like Beethoven. As will Elvis, as will the Carter Family, as will Jimmie Rodgers, Hank Williams.

The aging and declining population will have far-reaching impacts. Declining fertility rates will possibly increase immigration. The structure of family and society will inevitably change.

I love 'Modern Family;' I don't exactly watch it when it's on, but I try to catch up on it when I can; it's one of my favorite shows.