Tons of celebrities (including Ed Sheeran!) have been uploading Harlem Shake videos! The videos feature one lone dancer at the beginning. The music suddenly becomes crazy intense and EVERYONE starts dancing along!

The cast of Sam & Cat has officially joined in on the Harlem Shake action. They recently posted this Harlem Shake video featuring the Sam & Cat crew! What do YOU think of the Harlem Shake dance? Can you spot Jennette McCurdy and Ariana Grande?

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