I like any love song by Adele. She creates such rich melodies and has a magnificent voice. I guess Someone Like You is my absolute favorite of hers. I also love Tears in Heaven by Eric Clapton, which was inspired by the tragedy he faced when his child perished after falling out of a window. It's full of heartfelt emotion and makes me think of my own children.
Make you feel my love wasn't Adele's original, but I loved it when she sang it. You can't help and feel emotional, while the instrumentals were also in tune with it.