I have recently rooted my Galaxy Nexus (Verizon). All steps went well, and the device was rooted with no complications. I purchased Rom Manager Premium and tried to download the Codename Android ROM. With premium, you can do it from the phone. The steps went well until rebooting - my device is staying on the reboot screen (with all the colorful squares), and has been like this for at least three hours. Any suggestions? I know that pulling the battery may brick the device, so I just have it plugged in to the charger.
TL;DR: Rooted phone, stuck on reboot screen, don't want to pull battery.