Keith Olbermann showed a rare streak of humility (sort of) when he stopped by Tuesday's Late Show with David Letterman, two days after being fired by Al Gore's Current TV. "I screwed up," Olbermann said. "I screwed up really big on this. Let's just start there."

But Olbermann was still his usual hot-headed self when describing what went wrong with the cable network, though he did laugh it off with Letterman. "I thought we could do this," Olbermann explained. "It's my fault that it didn't succeed in the sense that I didn't think the whole thing through. I didn't say, 'You know, if you buy a $10 million chandelier, you should have a house to put it in. Just walking around with a $10 million chandelier isn't going to do anybody a lot of good, and it's not going to do any good to the chandelier.' And then it turned out we didn't have a lot to put the house on to put the chandelier in, or a building permit, and I, I should have known that. And it is, it is my fault at heart."

"You're the chandelier?" Letterman asked, sensing the irony.

"I'm the chandelier," Olbermann replied. "You are always pointing out how big my head is, so I think it's a suitable analogy."

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