Finale Fever

Fans, Oprah—and even Ellen—are on the edge of their seats to hear what Isaiah will reveal about Dr. Burke's fate next season.

"I can't say," says Isaiah. "I know that I probably won't have a job if I say—I do know that much!"

Although Isaiah's lips are sealed about the fate of his character, he does divulge another secret. Isaiah says he originally auditioned for the role of Dr. Shepherd—but didn't get the part.