Blocking. Again taking advantage of the poor AI pathing. Of course if there was an acutal person moving it would require a bit more work, but you see the general idea.
Surround. Pretty self explanatory this one.
Shift Click. Notice how shift clicking required less cyclying through hotkeys and generally more time efficient. Which of course gives you time to do other stuff.
Share Damage. Applies to call cases, but especially while creeping. When using normal units try to share the damage more so none of your units get into red.
I left the sound on (and turned off my winamp) so you can hear just what I am clicking and what I am pressing.
Right click--> Save as.
