By Nicole Sperling
Updated May 04, 2010 at 10:48 PM EDT

Paramount Pictures confirmed today that Grey’s Anatomy hottie Patrick Dempsey has been cast in Michael Bay’s third installment of the Transformers franchise. The plot of the third film is being kept under wraps but we have learned that Dempsey will play Megan Fox’s boss in a role that is “significant to the plot.” The movie begins filming this month around the U.S. and in Africa, Moscow and China.

The last two Transformers movies have grossed over $1.5 billion worldwide. Paramount Pictures will bow Transformers 3 next summer.