Grey's Anatomy (5.21): No Good At Saying Sorry

As preparations continue for Meredith and Derek's wedding, several residents must face the arrival of their parents at the hospital: Izzie's mother Robbie causes a stir when she pays a surprise visit, and Thatcher returns to make amends with Meredith and Lexie. The Chief clashes with Meredith over a controversial medical case.

Air Date: Thursday, April 30, 2009

• Guest starring Emmy-Nominated Sharon Lawrence ("NYPD Blue," "Desperate Housewives") as Izzie's Mother, Robbie
• "No Good at Saying Sorry (One More Chance)" As preparations continue for Meredith and Derek's wedding, Izzie receives a surprise hospital visit from her handful-of-a-mother, Robbie. Meanwhile, a newly sober Thatcher visits his daughters, Meredith and Lexie, in order to make amends, and the Chief and Meredith bitterly fight over a controversial medical case, on "Grey's Anatomy," THURSDAY, APRIL 30 (9:00-10:02 p.m., ET) on the ABC Television Network
• You know how when sad dad Thatcher Grey swings by Seattle Grace, he almost always stirs up some sort of trouble, angst and/or agita? Amazingly, his April 30 visit will bring Meredith and Lexie closer together. Source: TV Guide Online
• Guest starring Sharon Lawrence as Robbie, Jessica Capshaw as Dr. Arizona, Jeff Perry as Thatcher, Kellie Martin as Julie, Nina Siemaszko as Kate and Megan Henning as Willow.