What is one of the nicest things someone has ever done for you?

Back in 1988 the boss called me in and said they were going to let me go. Technology was catching up to my line of work. I'd never lost a job in my life before and I was pretty shattered. 

That lunch time I was walking down the street and there was a young girl, about 17. Walking towards me. I scarcely noticed her but she must have seen the expression on my face and she gave me the biggest smile. 

By the time I got my face unfrozen enough to smile back she was gone but she made a difference and I began to stop feeling sorry for myself. She has no idea what she did for me and she'd be in her 40s now. I hope she's having a good life.

I had a friend who wouldn't leave my side until he knew I was okay.

One of the nicest things someone has done? ^^ There are so many. :) I had been struggling with self image, I wouldn't eat and I was just in a bad place... I couldn't get help from friends, most of them left me alone and I pushed others away. A new boy had come to our school (I'm 15, a freshman and he's 18, a senior.) I started talking to him because of my best friend. He helped me a lot and I started eating more, I was a happier healthier me. :) We are dating now and I'm very thankful to have him. He's going through some stuff right now and I want to repay the favor. He graduated and will be a freshman in college while I'm a sophomore in high school. What he did for me was truly the nicest thing that had ever been done. ^^