Either I'm snowblind from the blizzard of buttons and icons on the page or CBS videos aren't embedable. There's an individual clip of Rachel talking with David Letterman last night about DOMA, but actually she was on for two full segments, so you're better off clicking through to the full episode. Rachel is the 4th and 5th segments, so starting around 24:30. Louis C.K. is the segment before that, and then The Flaming Lips, fyi.
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