- Season 1 Episode 6
If Tomorrow Never Comes
Alex gains the trust of Annie, a nervous patient with an extraordinarily large tumor, only to humiliate himself in front of her later. Meanwhile Derek chooses Meredith to assist with an elderly Parkinson's patient who may need surgery -- but Bailey disapproves of their relationship and is determined to make Meredith suffer -- and tensions escalate between Burke and Shepherd.
Ellen Pompeo as Meredith Grey
Patrick Dempsey as Derek Shepherd
Sandra Oh as Cristina Yang
Isaiah Washington as Preston Burke
Katherine Heigl as Isobel "Izzie" Stevens
Justin Chambers as Alex Karev
T.R. Knight as George O'Malley
Chandra Wilson as Miranda Bailey
James Pickens, Jr. as Richard Webber.
Bruce Weitz as Mr. Levangie
Alex S. Alexander as Annie Connors
Jane Galloway Heitz as Annie's mom
Lara Phillips as Mr. Levangie's daughter.