Ronald Reagan's unaired joke while recording his weekly radio address: "We begin bombing in five minutes."
Media reaction: "Oh my God. Cowboy. Cowboy. Paranoid warmonger. Bonzo at the Button. We are doomed!"
Barack Obama on his Mythbusters cameo: "I didn't get to blow anything up. I am a little frustrated with that."
Media reaction. (1) How cute. (2) Shrug.