Everyone’s talking about what David Letterman said about John McCain last night. Nutshell: McCain canceled his scheduled Letterman appearance at the last minute to, per Dave, “race back to Washington,” only to then sit for an interview with CBS News’s Katie Couric, snippets of which Letterman aired —including bits of McCain having his TV makeup applied — while shouting things like, “It’s as if [McCain] went off to get a manicure or somethin’ [instead of doing my show]” and wondering aloud whether McCain “suspended his campaign” because of the economy or because of his slipping poll numbers.

Letterman’s (substitute) guest last night, MSNBC’s Keith Olbermann, made this contribution to the bitter-fest (after McCain asked him, basically, Why do you think McCain told me he had to go to Washington to fix the economy and then made time for Katie Couric?)

OLBERMANN: I think [McCain] dissed you…Or the other possibility is that [Couric] has all the money that’s required to fix the economy.

Perhaps Olbermann and Letterman should switch jobs?

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Liz Cox Barrett is a writer at CJR.