After Gordon Brown was caught describing a voter as "bigoted", we look at four other memorable microphone gaffes.
1. Gordon Brown: "A sort of bigoted woman"
2. Joe Biden to Obama: "This is a big fucking deal"
3. Bush: Yo, Blair. How are you doing?
4. Bush to Cheney: "There's Adam Clymer, major league asshole from the New York Times"
5. CNN bathroom break