Usher: Actor For A Day

Looks like Usher's doing the off-Broadway thing.

The Grammy-winning singer will join the cast of "Fuerza Bruta: Look Up", a play where the audience stands as the performers and jump around in what reporters call "a watery world suspended just above the audience."

Usher will do two shows as the lead "Running Man' at the Daryl Roth Theatre April 28.