Before the 2012 MTV Video Music Awards airs Sept. 6, take a look back at Beyonce's most memorable performances, speeches and ensembles
September 13. 2009
The "Single Ladies (Put a Ring on It)" singer invited Taylor Swift to finish her acceptance speech after she won Best Video of the Year. Swift's speech for Best Female Video was cut short when Kanye West took the stage and shouted, "Yo, Taylor, I'm really happy for you, and I'm going to let you finish, but Beyonce had one of the best videos of all time. One of the best videos of all time!"