Knowing that her soon to be released movie will be a bomb, Katherine Heigl would love to return to Grey's Anatomy. She told the exclamation point network that she wants to play Izzie again and has asked the boss, Shonda Rhimes, to be put back on the show if possible. If I were Shonda and I am not, I would tell Katherine hell no. Shonda is so much nicer than I am though so even if she did say no she would say it in a much more friendly manner. Katherine left in a huff and burned every bridge in that place. When she saw she actually had missed a bridge here and there she got T.R. Knight to burn them down as he left. I don't think Shonda should let Katherine even visit the set.