Video: President Obama appears on David Letterman (9-21-09)

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Top ten list:
Other notable moments include the Letterman Top 10 reasons for Obama to appear on the show as follows:

10. Heard the lady with the heart-shaped potato was gonna be here.

9. Thought it would be fun to watch someone else get heckled.

8. Something to do with that whole Cash For Clunkers deal.

7. Every president since Teddy Roosevelt has done it.

6. Someone offers you 600 bucks, you take it ladies and gentlemen.

5. We told him Megan Fox would be here.

4. Needed some time to hang out before check-in time at his hotel.

3. I have no idea.

2. Said yes, without thinking, like Bush did with Iraq.

1. Wanted to congratulate Dave on the big Emmy win.

Related topic:
- Obama Tells Letterman: I Was Black Before the Election