I know that this subject has been brought up by many other people, but it's still funny when it happens to you. I'm talking about the "Just Dad" rule, which states:
No matter how famous or notable you are, to your kids you will always be "Just Dad."
(There is, of course, the "Just Mom" equivalent to this rule, but hey, we're talking about me here. Go write your own blog.)
After I received the proof copy of my book in the mail, I showed it to my kids. My daughter communicated her overflowing level of excitement by saying: "That's nice. What's for lunch?"
Then, later, after an article about the book came out in the local paper, I showed it to them. They both looked at it for a second and then walked away without comment, returning to whatever it was they were engaged in previously.
Believe me, I wouldn't have it any other way.