In this 7 minute screencast I discuss the usages of the
The methods are really useful when you need to invoke a method and have total control over the scope in which it is called. This is something that personally really confused me when I was learning, so I hope this helps some people. If you are still confused, please leave a comment and I will get back to you.
If you'd like to discuss this post further or ask any questions, please tweet me.