ISAIAH WASHINGTON

The actor admits he's bitter about his departure from the show, but he'll jump at the chance to return for a cameo.

He tells American magazine Entertainment Weekly, "Dr. Burke (his character) is probably the greatest challenge I've ever had. I've studied the medical world extensively. I gave it everything I had.

"If Shonda calls me and says, 'Look, we want you to do something for Grey's Anatomy,' I probably would not hesitate.

"But I don't really see that happening."

Source: WENN