Comment by cassianoleal

Bring up Finder: ⌘␣ "finder" ⏎ Bring up Activity Monitor: ⌘␣ "am" ⏎

Hardly difficult, especially for the pros who tend to be touch typists.

There's also ⌥⌘esc if you just want to quickly kill an app.

Also for Finder, you can enable the "Show Finder search window" Spotlight shortcut and set it to whattever pleases you.