Justin Bieber, The Late Show with David Letterman Justin Bieber, The Late Show with David Letterman

Justin Bieber dropped by Friday's taping of The Late Show With David Letterman to tell us "Top 10 Reasons It's Fun to Be Justin Bieber."

Justin Bieber, Ty Burrell and Zachary Levi hoop it up for NBA All-Star Celebrity Game

We'll only ruin No: 5: "At the barber shop, I can say, 'Give me the me.'"

Check out the sneak peek of the teen heartthrob's appearance. Bonus: There's a Bieber drum solo!

And in case you missed it, Bieber popped by Thursday's taping of The Daily Show to promote his upcoming film Justin Bieber: Never Say Never. The singer pulled a switcheroo, opening the show as Jon Stewart (trapped in Bieber's body), while Stewart posed as the Bieb in one of his signature purple hoodies. Check out the Freaky Friday action in the video below:

The Daily Show With Jon Stewart Mon - Thurs 11p / 10c
Intro - Justin Bieber and Jon Switch Bodies
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