Some neat conveniences for macOS users (or just the macOS-curious).
When ⌘↹-ing between apps, you can mouse over over an app and release ⌘ to switch to that app without having to spam ↹ or ⇧↹.
⌥⌘-click an app in the Dock to switch to that app and hide all other apps at the same time. This is great when screen sharing.