Obama on Letterman tonight Spoiler...

— Letterman has a presidential seal on his coffee mug for this particular show.

— Letterman does a "Top 10" list on reasons why Obama agreed to go on the show.

— One of the "Top Ten" reasons is "I don't know" (meaning that the self-deprecating Letterman isn't quite sure how he scored the POTUS).

— Letterman to Obama, after talking about health care: "Your job is more difficult than my job, that's what I learned here tonight."

— Topics of discussion between Letterman and Obama include health care, Afghanistan and Iraq.

— Obama tells Letterman: "We're not going to recover overnight. Unemployment is still going to be a big problem for at least another year." (hat tip: Reuters)

— When asked if racism is to blame for harsh rhetoric, Obama says, "It's important to realize that I was actually black before the election." (via AP's Phil Elliott)

— Before his interview with Obama, Letterman chatted with a woman in the audience who brought a heart-shaped potato for the president. Obama later said, "The main reason I am here? I wanna see that heart-shaped potato."

— From the pool report:

Top Ten Reasons Why President Obama Agreed To Appear On The Show

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.