If you have updated to 2.1 and have not rooted your phone but would like to do so here is a guide.
2.1 SP Recovery SBF has arrived !
This is great for those wanting to go slower and just gain root access of their phone so they can do things they couldn't otherwise like:
And many others without applying a custom ROM or Kernel.
On the otherhand it is also a stepping stone toward applying a custom rom or kernel as you need sprecovery to start with.