Now we have
1. Full Root access from adb
2. Root in terminal via 'su'
More detailed instructions are posted in the thread.
While I haven't seen anyone verify LeshaK's statement yet, if true, this is going to make the upcoming Galaxy S series phones twice as delicious - perhaps somebody will come up with a Froyo ROM before they are even released here in the US (Galaxy S is out in Europe).
For the latest root status, check the samdroid.net forum link and these threads on other sites that sprung up in response: