More than 70 million people tuned into to see gaffe-prone vice-presidential contenders Joe Biden and Sarah Palin square off in 2008, making it the most-watched veep debate in American history.
Held at Washington State University in Pullman, Washington, the 90-minute debate represented Palin's chance to redeem herself after a series of disastrous interviews and public mis-steps. She also became the first female candidate to appear in a vice-presidential or presidential debate since Geraldine Ferraro in 1984.
Sen. Biden, on the other hand, had to refrain from his fiery rhetorical style, at the risk of looking like a bully next to Palin's folksy public image.
The debate went off without a hitch for both candidates, with Biden avoiding attack lines and concentrating on his considerable knowledge of foreign policy, while Palin relied on her down-home cheerfulness (she famously greeted Biden with "Can I call you Joe?").
Watch the debate in full below: