Carrie Underwood stopped by.
So did Jennifer Hudson, Simon Cowell and even President Barack Obama… sort of.
There were plenty of memorable moments from the American Idol series finale, even before Trent Harmon was crowned the winner.
Who put on the best performance? Whose return took you most by surprise? What stood out to you the most, for either a good reason or a very bad one?
Relive the American Idol finale below…