I think it's Let it Be. Runners-up are Yesterday and Hey Jude. When I say this it's because I think they are the most well known and most played of all his songs. They're also his Beatles songs. I don't think any of his solo stuff is as famous as these 3 songs.
And I Love Her is my personal favorite song. Pretty much my favorite of all time. Amazing feel to it. The key switches ever so slightly. Plus, oddly, it's considered a cha-cha. It was my and my husband's first dance song at our wedding!
You Never Give Me Your Money ranks up there to me. Brilliant song. So many things intertwined. I wish the average citizen could be more familiar with it. And to think a 27-some year old did it. Also shocking is Eleanor Rigby. A 24 year old did that. Amazing.And I Love Her is my personal favorite song. Pretty much my favorite of all time. Amazing feel to it. The key switches ever so slightly. Plus, oddly, it's considered a cha-cha. It was my and my husband's first dance song at our wedding!