"Since it is broadcast live, the American sketch comedy television series Saturday Night Live has had several infamous events throughout its history that were either unplanned or provoked sufficient controversy to receive media coverage. Several hosts and musical guests have also been banned from returning due to their actions during the show."
-In 1990, comedian Andrew Dice Clay was chosen to host; cast member Nora Dunn and scheduled musical guest Sinéad O'Connor boycotted the show in protest, due to perceptions that his jokes were misogynistic.
-In 2004, Ashlee Simpson was caught lip syncing on the show. At the end she claimed her band started playing the wrong song but two days later said she had acid reflux.
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