Just in case you find that your Samsung Galaxy Nexus doesn't quite get enough battery life, or just looks too pretty, you can get a 3800mAh battery from Seido for it. The device pretty much bricks the phone, (and I don't mean that in the traditional sense... I mean that it literally makes it look like a big round brick!) You also have to give up your NFC capabilities, but you should be able to get a lot more usage out of it.
The battery retails for $69.95, and we have a website link below for you folks that need one. We've also included some comparison pics above so you can see the newly transformed Galaxy Nexus in all its deformed glory!
Source: PhoneArena and Seido