For developers, you will also be able to update your systems "Path" environmental variable to include adb and fastboot locations however the entire Toolkit appears to only run on Windows. The Toolkit can push su.zip (Superuser.apk) to your Nexus's SD card and flash the clockwork mod. The device itself will walk you through the rest of the process via on screen instructions.
Read the full feature set here.
The reality is that it seems to be pointless for handset providers to lock devices. The average time until someone can root a particular device is nearing the point where root toolkits are sometimes available before the actual device is on the market.
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