I use "get the image" in all my sites. Makes grabbing images so much easier. For instance, no need to explain to a customer that they need to set a featured image if they want a thumbnail in their list of latest posts.
I also use it to display thumbs in the backend. Wooslider for instance displays no thumbs of your slides in the admin area if you don't set a featured image yourself for each slide. Which would be double work and thus needs to be avoided. With the "get the image" plugin and a little tweaking of the Slider plugin this is easily solved.
The best thing about any plugin by Justin Tadlock is that they come with the option to get support for it. Support is paid, it costs $29 per year which gives you access to the ThemeHybrid forums. Ask any question that is related to the plugin or to the Theme Hybid themes and it gets answered quickly, each and every time. If you make WordPress sites for a living this is easily the best money you can spend on support.