We watched dozens of hours of celebrity roasts going back to the 1970s. Here are our five favorites, based on the lineup of roasters and their best jokes.

Let's face it, no roast is complete without a few jokes that go way too far. Join us as we count down the most unhinged, ...

Add Yahoo as a preferred source to see more of our stories on Google. Jeff Ross and Kevin Hart laughing on stage at roast of Justin Bieber - Kevin Mazur/Getty Images The New York Friars Club ...

Jeff Ross and Kevin Hart laughing on stage at roast of Justin Bieber - Kevin Mazur/Getty Images The New York Friars Club established the celebrity roast as a club tradition in 1950 with Sam Livingston ...