I have a couple of Macs at work. Funny, I usually install VirtualBox and live in a Linux VM. So on those occasions where I need to kill a rogue app in OS X, I get quite peeved when I can’t remember the “we do it differently” key stroke combinations.
Bring up menu:
Command+Option+Escape
From Dock:
Option+Right Click
From Apple Menu:
Shift+Click on Apple in menu
Activity Monitor:
Select app then Quit Process button
From terminal:
kill -9 [pid] or killall [process name]