She goes up through four octaves within about a minute and a half at the end of "Love On Top". She can do this live. And while pregnant.
That halftime show at Super Bowl XLVII (2013). Holy shit, that was epic.
Especially remembering that she had recently come under fire for singing the National Anthem to a backing track at the Presidential inauguration about a month before. Despite nearly a decade of being a very talented performer, that fiasco required a certain amount of damage control, and boy did she pull it off.
The best damage control for the National Anthem fiasco was when she attended a Super Bowl-related press conference, asked the audience to stand...and proceeded to sing the Star-Spangled Banner flawlessly a cappella. After she finished, she looked into the crowd and simply asked, "Any questions?" Boom.
The audience at her 2011 Glastonbury set sings the entire first half of "Irreplaceable" back to her. Doubles as Heartwarming as she is absolutely delighted by their response.
On December 13, 2013, she suddenly dropped a surprise album without any promotion on iTunes. It sold through the roof anyway, with 600,000 sold in the United States and 1 million copies sold worldwide in its first week of release. She's also the first woman to ever have all five of her albums debut at #1.