Play of the Day -- Mitt Romney's primary victories
Letterman, Leno and Stewart poke at the presumptive nominee.
Jimmy Fallon went back to normal after having President Obama as his guest on Late Night, Conan O'Brien makes light of a student spilling yogurt on the President, and other late-night hosts focus on Mitt Romney's primary victories.
Today's Must See Moment -- Fast forward to 0:19 to find out what happened to the latest casualty in the Secret Service scandal.
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