I release my drivers for bluetooth keyboards for Android last week.
Here is a list of SPP keyboards that i tested with my G1 as well as beta testers:
* ThinkOutside Shasta Keyboard
* Freedom Input Universal Keyboard I & II
* Chainpas SmartKeyboard
* Freedom Blackberry Keyboard
* Amzer SmartKeyboard
* Xema BlueKeyboard
* Snap-N-Type Keyboard
I can't post link to my site because admin does not want such.
PM or email me if you want more information.