<Tr> <Th> 91 </Th> <Td> 13 </Td> <Td> "Stairway to Heaven" </Td> <Td> Allison Liddi - Brown </Td> <Td> Mark Wilding </Td> <Td> January 22, 2009 (2009 - 01 - 22) </Td> <Td> 14.25 </Td> </Tr> <Tr> <Td_colspan="7"> Izzie is trying to figure out what Denny means by "I'm here for you". In the meantime, matters around the death - row patient get really rough while Bailey's patient continues to get worse, causing Bailey and Webber to cross the line . Lexie "breaks" Mark and Izzie comes to realize that she is sick . </Td> </Tr> <Tr> <Th> 92 </Th> <Td> 14 </Td> <Td> "Beat Your Heart Out" </Td> <Td> Julie Anne Robinson </Td> <Td> William Harper </Td> <Td> February 5, 2009 (2009 - 02 - 05) </Td> <Td> 15.20 </Td> </Tr> <Tr> <Td_colspan="7"> Bailey is promoted to attending by the chief, but when she finds herself having another child - patient, she seriously doubts herself . Dr. Webber treats a couple who tried to spice up their sex - life and Derek prepares to propose . Dr. Dixon has a nervous breakdown when her patient's parents try to hug her, causing Bailey and Yang to give her a special treatment and Sadie makes a bad mistake . Hunt and Cristina find themselves engaged in old - fashioned courting and Dixon and Robbins both suggest that Dr. Bailey will make a good pediatric surgeon . Shepherd decides to postpone the proposal when he receives a call from Addison and Arizona Robbins hits on Callie . </Td> </Tr>

Grey's anatomy season 5 episode 1 guest stars