How to enter unicode characters in a UILabel in Interface Builder?
Yes, you can click "Edit" > "Special Characters…" — there you can find all unicode characters (including the emoji) and copy/paste them where you set the label text in Interface Builder.
EDIT:In Xcode 6 it's "Edit" > "Emoji & Characters"
Xcode 7+: "Edit" > "Emoji & Symbols"
For those who tried doing it programmatically, but failed, just use this:
label.text = @"\U0001F50A";