Since Nexus One is still new, there is no “one click root” available for it yet, but I’m sure the team behind Flash Rec will release it soon. Their app for Hero really saves a lot of trouble when rooting it.
In this tutorial on how to install and root your Nexus One using RA Nexus Recovery Image, I’ll use the fastboot method as given by Amon himself.
When it comes to recovery image for Android phones, I should really appreciate Amon RA for his work and the recovery images he releases.
In my tutorial on how to root HTC Hero, I used his recovery image as that was the best option option available. And now he has released the same image for Nexus One too.