What can I achieve by rooting my Kindle Fire HD?

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http://androidforums.com – Newbie question. I'm keen to root my Kindle so at least I can get access to Google Play. But what else will rooting do? I've rooted my Galaxy S3 and I love the cleaner theme. Can you choose new themes with a rooted Kindle and display apps on the home screen like the Android phones, iPad etc...? (General)