Executive producer and creator Shonda Rhimes announced through her Twitter account that Jesse Williams will be live on Twitter on this week's episode to answer "Grey's Anatomy" fans' questions.

This Thursday, Seattle Grace Hospital residents try their hardest to impress the great surgeon Dr. Catherine Avery, who also happens to be Jackson's mother. She went to Seattle Grace to perform a groundbreaking transplant surgery. She is to perform a sensitive penis transplant.

Arizona and Alex find their hands tied with a confidentiality issue when a familiar patient comes into the ER. Meanwhile, a love-struck Teddy throws a dinner party for the couples, and Bailey makes a decision regarding her love life.

"Grey Anatomy's" lead star Ellen Pompeo will be guesting in "The Ellen Show" in the morning of Oct. 12 to promote this week's episode.

"Grey's Anatomy" fans are invited to tweet their questions during the airing of the episode on Thursday.

Here is a sneak preview for this week's episode.

"Grey's Anatomy" airs this Thursday 9 PM ET and 9 PM PT.