S3, E23: Addison takes a temporary leave from Seattle Grace and visits old friends in Los Angeles; Cristina reluctantly plans her wedding with help from Burke's mother and her own.
Paul Adelstein
Amy Brenneman
Timothy Daly
Taye Diggs
Merrin Dungey
Christopher Lowell
Diahann Carroll
Elizabeth Reaser
Jeff Perry
Bellamy Young
Raphael Sbarge