S02E07: 'Grandma Got Run Over By A Reindeer'

A young boy needs a heart transplant but doesnt seem to want it and his treatment causes Burke and Yang to have philosophical differences.

Meanwhile, when the interns rally to help Alex prepare to re-take his exam.

Meredith has to remind Izzie of the true spirit of the Christmas holiday.

And despite a reconciliation with his wife, Derek isnt in a festive mood.