Letterman's top 10 lists

Letterman's top 10 lists, 10. "Try not to be distracted by this ear-piercing megaphone"

9. "Remember, if you fall just get right back up"

8. "Your brother never needed to use a balance bar"

7. "That's the safest walk you can take in Chicago"

6. "Hurry up, I don't want to miss 'The Good Wife'"

5. "Careful... Careful... Careful..."

4. "Have you ever given any more thought to grad school?"

3. "Tuck in your shirt"

2. "Whoa, look at that moon!"

1. "Okay, now take a left"