Ask HN: Unexpected product features that pleased you?

Product features you stumbled upon, that really surprised you. Or, in general any feature that worked better than you expected it to.

Some, for me -

- When I started using the MacBook, unknowingly I tapped a word with three fingers, and the dictionary came up. Next, I tapped a link, and Safari browser opened up. I was genuinely surprised.

- Right-click on the image in the web browser, and paste it in the chat text bar, uploaded the image.

- Close a remote Safari tab.

- double tap on the iPhone 6 home button and the home screen scrolled a bit down, to the middle

- Three-finger swipe up on the MacBook and dragging and dropping applications across the desktops.