At last, the HTC Droid Eris is rooted. You need the stock Android 1.5 version  to get this done. If you are already on the leaked 2.1 ROM, this one is not for you. The Droid Eris is currently available in US via Verizon Wireless. Have a look at the video (below) for a demo or head over to the AndroidStory forums here for the guide on how to root your Eris.
Source: Android Central