Your favorite Pink Floyd song

I know this question has been asked alot on this board but I just wanted to hear yalls opinion. My favorite song is 'Wish You Were Here'. For me its hard to listen to that song, not the original but the Live one in Pulse. I listened to it the other night on the way home from cause its been years since I've heard it and I had to pull the car over. It reminds me of my grandpa and I cried like a baby when I heard it. Song is just amazing, something words cannot describe. I mean I 'Wish He Was Here', whats your favorite Pink Floyd song.