As if Doc's two-part finale wasn't already explosive enough, Blair Underwood will be making his debut as a mysterious - but intriguing - newcomer at Westside Hospital. In Us Weekly's exclusive first look at the Tuesday, April 14, finale of the hit Fox series, Underwood makes an appearance as Dr. Ben Grant. He is seen meeting Amy (Molly Parker) and Jake (Jon Ecker) before scrubbing in with the rest of the staff. A character bio was previously released for Underwood's character, which described Ben as someone who goes on "a collision course" with Amy. "Dr.