Jack Black Performs Onstage with Neil Diamond [VIDEO]

Jack Black joined Neil Diamond onstage last weekend to perform “Sweet Caroline”, and it was caught on video.

Neil did a cameo appearance in 2001 Jack Black movie “Saving Silverman”.  The duo performed together at The Greek Theater in Los Angeles.  Diamond was appearing at the Greek to celebrate the 40th Anniversary of his live album that was recorded there, “Hot August Nights”.