Joshua Jackson and his girlfriend, Diane Kruger. Jackson may appear on the current season of Grey's Anatomy after all, pending the resolution of the long-running strike.
Diahann Carroll will return to Seattle Grace in Season Four, even with Preston Burke (her character's son) gone from the show. We're looking forward to seeing this amazing actress return once again.
Seth Green is set to guest star on Grey's Anatomy in Season Four. The oddball comic actor does voices for Family Guy and has starred in flicks such as Can't Hardly Wait and the Austin Powers trilogy.