The most emotional part of the ep (even season 3)..so sad about Rick :((( He was hurt so many times and a lot of bad things happened to him. I hope that they can bring him back.. ;( He deserves a happy ending! And if he doesn't come back it's nice that everybody had a chance to say goodbye and show their respect..truly touching scene!!
p.s. Here's the song.. http://www.youtube.com/watch?v=Vtp-p7qFI2I