I’ll probably feel stupid in the morning for posting this, but Elvis Costello was Letterman’s guest host tonight. {Yes, I should be in bed. It’s spring break. Cut me some slack.} So, with what song did he choose to close the show?

“(What’s So Funny ‘Bout) Peace, Love, and Understanding”

As I walk through
This wicked world
Searchin’ for light in the darkness of insanity.

I ask myself
Is all hope lost?
Is there only pain and hatred, and misery?

And each time I feel like this inside,
There’s one thing I wanna know:
What’s so funny ’bout peace, love, & understanding?

Sing it, Elvis.

Updated, March 13, 8:30 AM: Nope. Don’t feel stupid.